{"id":168211,"date":"2026-07-14T16:30:32","date_gmt":"2026-07-14T11:00:32","guid":{"rendered":"https:\/\/www.practicemock.com\/blog\/?p=168211"},"modified":"2026-07-14T16:30:35","modified_gmt":"2026-07-14T11:00:35","slug":"statistics-for-ssc-cgl","status":"publish","type":"post","link":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/","title":{"rendered":"Statistics for SSC CGL 2026: Tier 1 &amp; Tier 2 Formulas &amp; Questions"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<div class=\"pm-ssc-cta\">\n  <style>\n    .pm-ssc-cta{\n      max-width:850px;\n      margin:20px auto;\n      background:linear-gradient(135deg,#2D2A7D,#194A97,#7F1ABA);\n      border-radius:22px;\n      padding:22px 26px;\n      display:flex;\n      align-items:center;\n      justify-content:space-between;\n      gap:20px;\n      box-shadow:0 10px 28px rgba(0,0,0,0.18);\n      font-family:Arial,sans-serif;\n      flex-wrap:wrap;\n    }\n\n    .pm-ssc-left{\n      display:flex;\n      align-items:center;\n      gap:14px;\n      color:#fff;\n      flex:1;\n      min-width:260px;\n    }\n\n    .pm-ssc-icon{\n      width:58px;\n      height:58px;\n      min-width:58px;\n      border-radius:50%;\n      background:rgba(255,255,255,0.16);\n      display:flex;\n      align-items:center;\n      justify-content:center;\n      font-size:28px;\n    }\n\n    .pm-ssc-text{\n      font-size:22px;\n      font-weight:800;\n      line-height:1.35;\n      color:#fff;\n    }\n\n    .pm-ssc-text span{\n      display:block;\n      font-size:15px;\n      font-weight:500;\n      opacity:0.95;\n      margin-top:5px;\n    }\n\n    .pm-ssc-btn{\n      background:#FFD84D;\n      color:#111 !important;\n      text-decoration:none;\n      padding:16px 28px;\n      border-radius:40px;\n      font-size:17px;\n      font-weight:800;\n      transition:0.25s ease;\n      white-space:nowrap;\n      box-shadow:0 8px 20px rgba(0,0,0,0.16);\n    }\n\n    .pm-ssc-btn:hover{\n      transform:translateY(-3px);\n      background:#fff;\n    }\n\n    @media(max-width:768px){\n\n      .pm-ssc-cta{\n        padding:20px;\n      }\n\n      .pm-ssc-text{\n        font-size:18px;\n      }\n\n      .pm-ssc-text span{\n        font-size:14px;\n      }\n\n      .pm-ssc-btn{\n        width:100%;\n        text-align:center;\n        box-sizing:border-box;\n      }\n    }\n  <\/style>\n\n  <div class=\"pm-ssc-left\">\n    <div class=\"pm-ssc-icon\">\ud83d\udc65<\/div>\n\n    <div class=\"pm-ssc-text\">\n      10,000+ Aspirants have used this to check their preparation level\n      <span>\n        Attempt a quick SSC CGL quiz with exam-level questions\n      <\/span>\n    <\/div>\n  <\/div>\n\n  <a class=\"pm-ssc-btn\"\n     href=\"https:\/\/www.practicemock.com\/?next=https%3A%2F%2Fs1.practicemock.com%2Fexams%2F%3Fc%3Dssccglt126%26i%3Dssc&#038;ref=15733\"\n     target=\"_blank\"\n     rel=\"noopener\">\n     Start Free SSC CGL Quiz \u2192\n  <\/a>\n<\/div>\n\n\n\n<p><\/p>\n\n\n<div class=\"yoast-breadcrumbs\"><span><span><a href=\"https:\/\/www.practicemock.com\/blog\/\">Home<\/a><\/span> \u00bb <span><a href=\"https:\/\/www.practicemock.com\/blog\/category\/ssc-cgl\/\">SSC CGL<\/a><\/span> \u00bb <span class=\"breadcrumb_last\" aria-current=\"page\">Statistics for SSC CGL<\/span><\/span><\/div>\n\n\n<p><\/p>\n\n\n\n<p>Statistics for SSC CGL is an important topic that can help candidates score valuable marks in both Tier 1 and Tier 2 examinations. Many aspirants focus only on Arithmetic and Advanced Maths, but Statistics remains a scoring area due to its formula-based and concept-based questions. Topics such as Mean, Median, Mode, Standard Deviation, Variance, Probability, Correlation, and Regression are regularly tested in SSC CGL. For candidates targeting the Junior Statistical Officer (JSO) post, Statistics becomes even more important because a dedicated Tier 2 paper is conducted. This blog covers key concepts, practice questions, and a free PDF for effective preparation.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/www.practicemock.com\/ssc-cgl-test-series\/?ref=13992\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Attempt a Free SSC CGL Exam Readiness Mock Test<\/strong><\/a><\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Basic Concept: Statistics for SSC CGL<\/h2>\n\n\n\n<p>Here we have provided the basic concept of the statistics, which include mean (average), median, mode, quartiles, deciles, and percentiles. You are strongly advised to understand the concept so that you can solve questions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Mean (Average)<\/h3>\n\n\n\n<p><strong>Definition:<\/strong> The Mean is what we normally call the average. It tells us the central value of the data.<\/p>\n\n\n\n<p><strong>Formula: <\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"354\" height=\"71\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-31.png\" alt=\"Formula of Mean.\" class=\"wp-image-168237\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p><strong>Example:<\/strong> Let\u2019s say we have these numbers: 5, 10, 15, 20, 25<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"455\" height=\"70\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-32.png\" alt=\"Example of Mean.\" class=\"wp-image-168238\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Median<\/h3>\n\n\n\n<p><strong>Definition:<\/strong> The Median is the middle value when data is arranged in ascending or descending order.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If the total numbers are <strong>odd<\/strong>, the median is the middle number.<\/li>\n\n\n\n<li>If the total numbers are <strong>even<\/strong>, the median is the average of the two middle numbers.<\/li>\n<\/ul>\n\n\n\n<p><strong>Formula: <\/strong>For an Odd number of terms:<\/p>\n\n\n\n<p class=\"has-text-align-center\">Median=Middle&nbsp;value<\/p>\n\n\n\n<p>(when data is sorted)<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"301\" height=\"78\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-36.png\" alt=\"Formula for Median for Odd Numbers.\" class=\"wp-image-168254\" style=\"width:262px;height:68px\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p>For an Even number of terms (data must be sorted):<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"470\" height=\"64\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-37.png\" alt=\"Formula for Median for Even Numbers.\" class=\"wp-image-168261\" style=\"width:441px;height:60px\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p><strong>Example 1 (Odd):<\/strong> Data: 3, 5, 7<br>\u2192 Median = <strong>5<\/strong> (middle value)<\/p>\n\n\n\n<p><strong>Example 2 (Even):<\/strong> Data: 4, 8, 10, 12<br>\u2192 Median = Average of 8 and 10 = (8 + 10)\/2 = <strong>9<\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Mode<\/h3>\n\n\n\n<p><strong>Definition:<\/strong> The Mode is the number that appears most frequently in the data.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>There can be <strong>no mode<\/strong>, <strong>one mode<\/strong>, or <strong>more than one mode<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong>Example:<\/strong> Data: 2, 4, 4, 6, 8, 4, 10<br>\u2192 Mode = <strong>4<\/strong> (it appears 3 times)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Quartiles<\/h3>\n\n\n\n<p><strong>Definition:<\/strong> The Quartiles divide the data into 4 equal parts after sorting.<\/p>\n\n\n\n<p><strong>Types:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Q1 (First Quartile)<\/strong> \u2013 25% of the data lies below it<\/li>\n\n\n\n<li><strong>Q2 (Second Quartile)<\/strong> \u2013 50% below (also <strong>Median<\/strong>)<\/li>\n\n\n\n<li><strong>Q3 (Third Quartile)<\/strong> \u2013 75% below<\/li>\n<\/ul>\n\n\n\n<p><strong>Formula: <\/strong>For a data set arranged in ascending order:<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"395\" height=\"79\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-33.png\" alt=\"Formula for Quartiles.\" class=\"wp-image-168248\" style=\"width:355px;height:71px\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p>Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>k=1,2,3 (depending on which quartile you&#8217;re calculating)<\/li>\n\n\n\n<li>nnn = number of data points<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/practicemock.com\/ssc-cgl-test-series\/?next=https%3A%2F%2Fs1.practicemock.com%2Fexams%2F%3Fc%3Ddashboard%26i%3Dssc%26dl%3Dhttps%253A%252F%252Fwww.practicemock.com%252Fpricing%252Fmarketing%252Ffiles%252Fpdf%252Fssc-cgl-pyq-2024-tier---1-%252809-09-2024%2529-shift-1.pdf&amp;ref=12713\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Sign Up to Download Free SSC CGL Previous Year Paper<\/strong><\/a><\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Example:<\/strong> Data: 5, 10, 15, 20, 25, 30, 35, 40<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Q1 = 1\/4th position \u2192 around 2.25th value \u2192 between 2nd (10) and 3rd (15)<br>\u2192 Q1 \u2248 <strong>11.25<\/strong><\/li>\n\n\n\n<li>Q2 = Median = Average of 4th (20) and 5th (25) \u2192 (20+25)\/2 = <strong>22.5<\/strong><\/li>\n\n\n\n<li>Q3 = Around 6.75th position \u2192 between 6th (30) and 7th (35)<br>\u2192 Q3 \u2248 <strong>33.75<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5. Deciles<\/h3>\n\n\n\n<p><strong>Definition:<\/strong> The Deciles divide the data into 10 equal parts.<\/p>\n\n\n\n<p><strong>Types:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>D1<\/strong> = 10% of the data lies below it<\/li>\n\n\n\n<li><strong>D5<\/strong> = 50% of the data lies below it (same as Median)<\/li>\n\n\n\n<li><strong>D9<\/strong> = 90% of the data lies below it<\/li>\n<\/ul>\n\n\n\n<p><strong>Formula: <\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"388\" height=\"74\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-34.png\" alt=\"Formula for Deciles.\" class=\"wp-image-168250\" style=\"width:346px;height:66px\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p>Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>k=1 to 9<\/li>\n<\/ul>\n\n\n\n<p><strong>Example:<\/strong> If your score is at <strong>D7<\/strong>, it means you scored better than <strong>70%<\/strong> of people.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. Percentiles<\/h3>\n\n\n\n<p><strong>Definition:<\/strong> The Percentiles divide data into 100 equal parts.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>k-th percentile<\/strong> means <strong>k% of the data is below<\/strong> that value.<\/li>\n\n\n\n<li>Common ones: 25th (Q1), 50th (Median), 75th (Q3), 90th (often used in exams).<\/li>\n<\/ul>\n\n\n\n<p><strong>Formula: <\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"383\" height=\"73\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-35.png\" alt=\"Formula for Percentiles.\" class=\"wp-image-168251\" style=\"width:336px;height:64px\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p>Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>k = desired percentile (1 to 99)<\/li>\n\n\n\n<li>n = number of data points<\/li>\n<\/ul>\n\n\n\n<p><strong>Example:<\/strong> If your marks are at the <strong>90th percentile<\/strong>, it means you scored <strong>better than 90%<\/strong> of the students.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. Standard Deviation (SD)<\/h3>\n\n\n\n<p><strong>Definition:<\/strong> Standard Deviation measures how much the data values deviate (spread out) from the mean. A small SD means values are close to the mean; a large SD means values are spread out.<\/p>\n\n\n\n<p><strong>Formula (for Ungrouped Data): <\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"222\" height=\"79\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-38.png\" alt=\"Formula for Standard Deviation (SD).\" class=\"wp-image-168278\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p>Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>x = each value<\/li>\n\n\n\n<li>x\u0304= mean<\/li>\n\n\n\n<li>n = number of values<\/li>\n<\/ul>\n\n\n\n<p><strong>Example:<\/strong> Data: 2, 4, 6<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mean x\u0304 = (2+4+6)\/3 = 4<\/li>\n\n\n\n<li>SD =<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"678\" height=\"68\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-39.png\" alt=\"Example for Standard Deviation.\" class=\"wp-image-168280\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8. Variance<\/h3>\n\n\n\n<p><strong>Definition:<\/strong> Variance is the square of the standard deviation. It shows how spread out the data is \u2014 but unlike SD, it&#8217;s not in original units (it\u2019s squared).<\/p>\n\n\n\n<p><strong>Formula:<\/strong> <\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"258\" height=\"74\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-40.png\" alt=\"Formula for Variance.\" class=\"wp-image-168284\" style=\"width:223px;height:64px\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>OR<\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-text-align-center\">Variance = (Standard Deviation)<sup>2<\/sup><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Example:<\/strong> From the previous example: SD = 1.63<\/p>\n\n\n\n<p>So, <\/p>\n\n\n\n<p class=\"has-text-align-center\">Variance \u2248 1.63<sup>2<\/sup> \u2248 2.67<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">9. Coefficient of Skewness<\/h3>\n\n\n\n<p><strong>Definition:<\/strong> Skewness tells us about the shape of the data distribution; whether it is symmetrical, or skewed (tilted) to the left or right.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If data is <strong>symmetrical,<\/strong> \u2192 skewness = 0<\/li>\n\n\n\n<li>If data is <strong>positively skewed<\/strong> \u2192 tail on the <strong>right<\/strong> side<\/li>\n\n\n\n<li>If data is <strong>negatively skewed<\/strong> \u2192 tail on the <strong>left<\/strong> side<\/li>\n<\/ul>\n\n\n\n<p><strong>Karl Pearson\u2019s Coefficient of Skewness Formula:<\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"406\" height=\"63\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-41.png\" alt=\"Karl Pearson\u2019s Coefficient of Skewness Formula\" class=\"wp-image-168286\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p>Alternatively, if mode is not given:<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"66\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-42.png\" alt=\"Karl Pearson\u2019s Coefficient of Skewness Formula if mode is not given.\" class=\"wp-image-168289\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p><strong>Example:<\/strong> Mean = 60, Median = 55, SD = 10<\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"501\" height=\"69\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/image-43.png\" alt=\"Example on skewness.\" class=\"wp-image-168291\" style=\"width:472px;height:65px\"\/><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">10. Empirical Relationship<\/h3>\n\n\n\n<p><strong>Definition:<\/strong> This is a general rule connecting Mean, Median, and Mode for moderately skewed distributions.<\/p>\n\n\n\n<p><strong>Formula:<\/strong> <\/p>\n\n\n\n<p class=\"has-text-align-center\">Mode \u2248 3 (Median) \u2212 2 (Mean)<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>OR<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center\">Mean-Mode \u2248 3 (Mean\u2212Median)<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Example:<\/strong> If Mean = 70, Median = 60<br>Then,<br>Mode \u2248 3 (60) \u2212 2 (70) = 180\u2212140=40<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Attempt Free Quiz on Statistics for SSC CGL 2026 Exam<\/h2>\n\n\n\n<p>Here, we have provided a free quiz on SSC CGL statistics questions. Attempt these questions and test your preparation level.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<style>\n.wp-quiz-wrapper { font-family: Arial, sans-serif; margin: 30px 0; }\n.wp-quiz-wrapper * { box-sizing: border-box; }\n.wp-quiz-container { max-width: 700px; margin: auto; padding: 20px; background: #fff; border-radius: 14px; box-shadow: 0 6px 16px rgba(0,0,0,0.10); }\n.wp-quiz-header { position: sticky; top: 0; z-index: 100; background: #1B2A4A; color: #fff; padding: 12px 20px; border-radius: 10px 10px 0 0; display: flex; justify-content: space-between; align-items: center; font-size: 15px; font-weight: bold; box-shadow: 0 2px 8px rgba(0,0,0,0.25); margin: -20px -20px 20px -20px; }\n.wp-quiz-score-badge { background: #155724; color: #fff; padding: 4px 14px; border-radius: 20px; font-size: 14px; font-weight: 700; white-space: nowrap; }\n.wp-quiz-question { margin-bottom: 22px; border: 1px solid #e4e7ef; border-radius: 10px; padding: 16px; background: #f5f6fa; }\n.wp-quiz-question h3 { font-weight: bold; font-size: 16px; color: #1B2A4A; margin-top: 0; margin-bottom: 12px; line-height: 1.55; }\n.wp-quiz-wrapper button { width: 100%; padding: 11px 14px; margin: 5px 0; border: 1.5px solid #d1d5e0; border-radius: 6px; background: #fff; color: #333; font-size: 14.5px; cursor: pointer; text-align: left; transition: background 0.15s, border-color 0.15s, color 0.15s; }\n.wp-quiz-wrapper button:hover { background: #e8f5ff; border-color: #1B2A4A; color: #1B2A4A; }\n.wp-quiz-wrapper button.correct { background: #155724; border-color: #0c3815; color: #ffffff; font-weight: 600; }\n.wp-quiz-wrapper button.wrong { background: #721c24; border-color: #4a1117; color: #ffffff; font-weight: 600; }\n.wp-quiz-wrapper button.locked { pointer-events: none; }\n.wp-quiz-wrapper button.correct.locked, .wp-quiz-wrapper button.wrong.locked { opacity: 1; }\n.wp-quiz-summary { margin-top: 36px; padding: 20px; border-radius: 12px; background: #f5f6fa; border: 2px solid #1B2A4A; }\n.wp-quiz-summary h3 { text-align: center; color: #1B2A4A; margin-bottom: 20px; font-size: 18px; }\n.wp-summary-row { display: grid; grid-template-columns: 120px 1fr 40px; gap: 10px; align-items: center; margin-bottom: 12px; font-weight: bold; font-size: 13.5px; color: #1B2A4A; }\n.wp-summary-bar { height: 13px; background: #dde1ea; border-radius: 10px; overflow: hidden; }\n.wp-bar-fill { height: 100%; width: 0%; border-radius: 10px; transition: width 0.5s ease; }\n.bar-attempted { background: #1B2A4A; } .bar-correct { background: #155724; } .bar-wrong { background: #721c24; } .bar-unattempted { background: #b0b7c3; width: 100%; }\n.wp-final-score { text-align: center; font-size: 18px; margin-top: 20px; padding-top: 16px; border-top: 1px solid #d1d5e0; color: #1B2A4A; }\n.wp-score-value { font-size: 32px; font-weight: 800; color: #155724; margin-left: 6px; }\n.wp-quiz-modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.75); z-index: 99999; align-items: center; justify-content: center; }\n.wp-quiz-modal.is-active { display: flex; }\n.wp-modal-content { background: #ffffff; padding: 40px 30px; border-radius: 16px; max-width: 450px; width: 90%; text-align: center; box-shadow: 0 15px 40px rgba(0,0,0,0.3); position: relative; }\n.wp-modal-title { color: #1B2A4A; font-size: 24px; font-weight: bold; margin-top: 0; margin-bottom: 10px; }\n.wp-modal-score-text { font-size: 18px; color: #555; margin-top: 20px; margin-bottom: 5px; }\n.wp-modal-score-number { font-size: 54px; font-weight: 900; color: #155724; margin: 0 0 25px 0; line-height: 1; }\n.wp-modal-message { font-size: 16px; color: #444; line-height: 1.5; margin-bottom: 30px; }\n.wp-modal-btn { display: inline-block; background: #00C853; color: #ffffff; text-decoration: none; padding: 16px 30px; font-size: 17px; font-weight: bold; border-radius: 8px; width: 100%; box-shadow: 0 4px 10px rgba(0, 200, 83, 0.3); }\n.wp-modal-close { position: absolute; top: 15px; right: 20px; font-size: 24px; color: #999; cursor: pointer; background: none; border: none; }\n<\/style>\n\n<div class=\"wp-quiz-wrapper\" id=\"quiz-statistics\">\n  <div class=\"wp-quiz-container\">\n    <div class=\"wp-quiz-header\">\n      <span> Statistics &#038; Mathematics Section <\/span>\n      <span class=\"wp-quiz-score-badge\">Score: <strong data-display=\"score\">0.00<\/strong><\/span>\n    <\/div>\n    <div class=\"wp-questions-wrapper\">\n      \n      <div class=\"wp-quiz-question\" data-answered=\"false\">\n        <h3>Q1. For a population of size N with population mean square S\u00b2, if a sample of size n is selected using Simple Random Sampling Without Replacement (SRSWOR), what is the standard error of the sample mean?<\/h3>\n        <button data-correct=\"true\">(A) S \u00d7 \u221a(1\/n &#8211; 1\/N)<\/button>\n        <button data-correct=\"false\">(B) S \u00d7 \u221a(1\/n + 1\/N)<\/button>\n        <button data-correct=\"false\">(C) S \u00d7 (N &#8211; n)\/(N \u00d7 n)<\/button>\n        <button data-correct=\"false\">(D) S \u00d7 \u221a(N &#8211; n)<\/button>\n      <\/div>\n\n      <div class=\"wp-quiz-question\" data-answered=\"false\">\n        <h3>Q2. If the two lines of regression are given by 3X + 2Y &#8211; 26 = 0 and 6X + Y &#8211; 31 = 0, what is the exact value of the correlation coefficient (r) between X and Y?<\/h3>\n        <button data-correct=\"false\">(A) 0.5<\/button>\n        <button data-correct=\"true\">(B) -0.5<\/button>\n        <button data-correct=\"false\">(C) 0.25<\/button>\n        <button data-correct=\"false\">(D) -0.25<\/button>\n      <\/div>\n\n      <div class=\"wp-quiz-question\" data-answered=\"false\">\n        <h3>Q3. If Laspeyres&#8217; Price Index is 144 and Paasche&#8217;s Price Index is 169, find the absolute difference between Bowley&#8217;s Price Index and Fisher&#8217;s Ideal Price Index.<\/h3>\n        <button data-correct=\"false\">(A) 0.0<\/button>\n        <button data-correct=\"true\">(B) 0.5<\/button>\n        <button data-correct=\"false\">(C) 1.0<\/button>\n        <button data-correct=\"false\">(D) 1.5<\/button>\n      <\/div>\n\n      <div class=\"wp-quiz-question\" data-answered=\"false\">\n        <h3>Q4. The moment generating function (MGF) of a continuous random variable X is given by M(t) = (1 &#8211; 2t)^(-4). What is the variance of this random variable?<\/h3>\n        <button data-correct=\"false\">(A) 4<\/button>\n        <button data-correct=\"false\">(B) 8<\/button>\n        <button data-correct=\"true\">(C) 16<\/button>\n        <button data-correct=\"false\">(D) 32<\/button>\n      <\/div>\n\n      <div class=\"wp-quiz-question\" data-answered=\"false\">\n        <h3>Q5. While testing the significance of the population correlation coefficient (\u03c1 = 0) for a sample of size n drawn from a bivariate normal population, the appropriate test statistic follows a Student&#8217;s t-distribution with degrees of freedom equal to:<\/h3>\n        <button data-correct=\"false\">(A) n &#8211; 1<\/button>\n        <button data-correct=\"true\">(B) n &#8211; 2<\/button>\n        <button data-correct=\"false\">(C) n &#8211; 3<\/button>\n        <button data-correct=\"false\">(D) 2n &#8211; 2<\/button>\n      <\/div>\n\n      <div class=\"wp-quiz-question\" data-answered=\"false\">\n        <h3>Q6. In a time series index numbers table, an old series with base year 2015 is spliced to a new series with base year 2022. If the old index value for the year 2024 was 160, and the old index value for the base year 2022 was 128, what is the spliced new index value for the year 2024 (taking new base 2022 = 100)?<\/h3>\n        <button data-correct=\"false\">(A) 120<\/button>\n        <button data-correct=\"true\">(B) 125<\/button>\n        <button data-correct=\"false\">(C) 132<\/button>\n        <button data-correct=\"false\">(D) 135<\/button>\n      <\/div>\n\n      <div class=\"wp-quiz-question\" data-answered=\"false\">\n        <h3>Q7. In the Analysis of Variance (ANOVA) for a Randomized Block Design (RBD) featuring &#8216;v&#8217; treatments and &#8216;r&#8217; blocks, the degrees of freedom associated with the Error Sum of Squares (ESS) is calculated as:<\/h3>\n        <button data-correct=\"false\">(A) vr &#8211; 1<\/button>\n        <button data-correct=\"false\">(B) v(r &#8211; 1)<\/button>\n        <button data-correct=\"false\">(C) r(v &#8211; 1)<\/button>\n        <button data-correct=\"true\">(D) (v &#8211; 1)(r &#8211; 1)<\/button>\n      <\/div>\n\n      <div class=\"wp-quiz-question\" data-answered=\"false\">\n        <h3>Q8. A moderately skewed frequency distribution has a mean of 40, a median of 38, and Karl Pearson&#8217;s coefficient of skewness is 0.5. What is the variance of this distribution?<\/h3>\n        <button data-correct=\"false\">(A) 12<\/button>\n        <button data-correct=\"false\">(B) 24<\/button>\n        <button data-correct=\"true\">(C) 144<\/button>\n        <button data-correct=\"false\">(D) 169<\/button>\n      <\/div>\n\n      <div class=\"wp-quiz-question\" data-answered=\"false\">\n        <h3>Q9. If X\u2081, X\u2082, &#8230;, X\u2099 are &#8216;n&#8217; independent standard normal random variables, then the random variable Y defined as the sum of squares of these variables (Y = X\u2081\u00b2 + X\u2082\u00b2 + &#8230; + X\u2099\u00b2) follows:<\/h3>\n        <button data-correct=\"false\">(A) Normal Distribution with variance n<\/button>\n        <button data-correct=\"true\">(B) Chi-Square Distribution with n degrees of freedom<\/button>\n        <button data-correct=\"false\">(C) Student&#8217;s t-distribution with n-1 degrees of freedom<\/button>\n        <button data-correct=\"false\">(D) F-Distribution with (1, n-1) degrees of freedom<\/button>\n      <\/div>\n\n      <div class=\"wp-quiz-question\" data-answered=\"false\">\n        <h3>Q10. If the total correlation coefficients between three variables X\u2081, X\u2082, and X\u2083 are all identical and equal to 0.5 (i.e., r\u2081\u2082 = r\u2081\u2083 = r\u2082\u2083 = 0.5), what is the value of the partial correlation coefficient r\u2081\u2082.\u2083?<\/h3>\n        <button data-correct=\"false\">(A) 0.25<\/button>\n        <button data-correct=\"true\">(B) 0.33<\/button>\n        <button data-correct=\"false\">(C) 0.50<\/button>\n        <button data-correct=\"false\">(D) 0.66<\/button>\n      <\/div>\n\n    <\/div>\n\n    <div class=\"wp-quiz-summary\">\n      <h3>Quiz Summary<\/h3>\n      <div class=\"wp-summary-row\"><span>Attempted<\/span><div class=\"wp-summary-bar\"><div class=\"wp-bar-fill bar-attempted\" data-summary=\"attempted\"><\/div><\/div><span data-count=\"attempted\">0<\/span><\/div>\n      <div class=\"wp-summary-row\"><span>Correct<\/span><div class=\"wp-summary-bar\"><div class=\"wp-bar-fill bar-correct\" data-summary=\"correct\"><\/div><\/div><span data-count=\"correct\">0<\/span><\/div>\n      <div class=\"wp-summary-row\"><span>Wrong<\/span><div class=\"wp-summary-bar\"><div class=\"wp-bar-fill bar-wrong\" data-summary=\"wrong\"><\/div><\/div><span data-count=\"wrong\">0<\/span><\/div>\n      <div class=\"wp-summary-row\"><span>Unattempted<\/span><div class=\"wp-summary-bar\"><div class=\"wp-bar-fill bar-unattempted\" data-summary=\"unattempted\"><\/div><\/div><span data-count=\"unattempted\">0<\/span><\/div>\n      <div class=\"wp-final-score\">Final Score: <span class=\"wp-score-value\" data-display=\"score\">0.00<\/span><\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<div class=\"wp-quiz-modal\" id=\"modal-statistics\">\n  <div class=\"wp-modal-content\">\n    <button class=\"wp-modal-close\">\u2716<\/button>\n    <h2 class=\"wp-modal-title\">Quiz Completed!<\/h2>\n    <div class=\"wp-modal-score-text\">You have scored:<\/div>\n    <div class=\"wp-modal-score-number\" data-display=\"modal-score\">0.00<\/div>\n    <p class=\"wp-modal-message\">Great job! You have successfully completed the test.<\/p>\n  <\/div>\n<\/div>\n\n<script>\n(function() {\n  const wrapper = document.getElementById('quiz-statistics');\n  const modal = document.getElementById('modal-statistics');\n  const allQuestions = wrapper.querySelectorAll('.wp-quiz-question');\n  const totalQuestions = allQuestions.length; \n  const storageName = 'wp_quiz_statistics_v1'; \n\n  modal.querySelector('.wp-modal-close').addEventListener('click', () => modal.classList.remove('is-active'));\n\n  let currentScore = 0, totalAttempted = 0, totalCorrect = 0, totalWrong = 0;\n  function getSavedData() { try { return JSON.parse(sessionStorage.getItem(storageName) || '{}'); } catch { return {}; } }\n  function saveData(data) { sessionStorage.setItem(storageName, JSON.stringify(data)); }\n\n  function refreshScreen() {\n    const totalUnattempted = totalQuestions - totalAttempted;\n    wrapper.querySelector('[data-count=\"attempted\"]').innerText = totalAttempted;\n    wrapper.querySelector('[data-count=\"correct\"]').innerText = totalCorrect;\n    wrapper.querySelector('[data-count=\"wrong\"]').innerText = totalWrong;\n    wrapper.querySelector('[data-count=\"unattempted\"]').innerText = totalUnattempted;\n    \n    wrapper.querySelector('[data-summary=\"attempted\"]').style.width = (totalAttempted \/ totalQuestions) * 100 + \"%\";\n    wrapper.querySelector('[data-summary=\"correct\"]').style.width = (totalCorrect \/ totalQuestions) * 100 + \"%\";\n    wrapper.querySelector('[data-summary=\"wrong\"]').style.width = (totalWrong \/ totalQuestions) * 100 + \"%\";\n    wrapper.querySelector('[data-summary=\"unattempted\"]').style.width = (totalUnattempted \/ totalQuestions) * 100 + \"%\";\n    \n    let displayScore = currentScore.toFixed(2);\n    wrapper.querySelectorAll('[data-display=\"score\"]').forEach(el => el.innerText = displayScore);\n    modal.querySelector('[data-display=\"modal-score\"]').innerText = displayScore;\n  }\n\n  function lockQuestion(questionElement, clickedBtnIndex, isCorrect) {\n    questionElement.dataset.answered = \"true\";\n    const buttons = questionElement.querySelectorAll(\"button\");\n    buttons.forEach(btn => btn.classList.add(\"locked\"));\n    \n    if (isCorrect) { \n      buttons[clickedBtnIndex].classList.add(\"correct\"); \n    } else {\n      buttons[clickedBtnIndex].classList.add(\"wrong\");\n      questionElement.querySelector(\"[data-correct='true']\").classList.add(\"correct\");\n    }\n  }\n\n  const pastAnswers = getSavedData();\n  allQuestions.forEach((question, index) => {\n    const pastAnswer = pastAnswers[index];\n    if (pastAnswer !== undefined) {\n      totalAttempted++;\n      if (pastAnswer.correct) totalCorrect++; else totalWrong++;\n      lockQuestion(question, pastAnswer.chosenIndex, pastAnswer.correct);\n    }\n  });\n  \n  \/\/ Scoring formula: +2 for correct, -0.5 for wrong\n  currentScore = (totalCorrect * 2) - (totalWrong * 0.5);\n  refreshScreen();\n  if (totalAttempted === totalQuestions && totalQuestions > 0) modal.classList.add('is-active');\n\n  allQuestions.forEach((question, index) => {\n    const buttons = question.querySelectorAll(\"button\");\n    buttons.forEach((btn, btnIndex) => {\n      btn.addEventListener(\"click\", function() {\n        if (question.dataset.answered === \"true\") return;\n        totalAttempted++;\n        const isRightAnswer = (btn.dataset.correct === \"true\");\n        if (isRightAnswer) totalCorrect++; else totalWrong++;\n        lockQuestion(question, btnIndex, isRightAnswer);\n        currentScore = (totalCorrect * 2) - (totalWrong * 0.5);\n        pastAnswers[index] = { chosenIndex: btnIndex, correct: isRightAnswer };\n        saveData(pastAnswers);\n        refreshScreen();\n        if (totalAttempted === totalQuestions) setTimeout(() => modal.classList.add('is-active'), 800);\n      });\n    });\n  });\n})();\n<\/script>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Download Free PDF of Questions on Statistics for SSC CGL<\/h2>\n\n\n\n<p>Sharpen your preparation with this free Statistics Questions PDF for SSC CGL. The PDF contains a curated set of exam-level questions along with detailed answers and step-by-step solutions to help you understand concepts, improve problem-solving skills, and practice effectively before the exam.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background wp-element-button\" href=\"https:\/\/practicemock.com\/ssc-cgl-test-series\/?next=https%3A%2F%2Fs1.practicemock.com%2Fexams%2F%3Fc%3Ddashboard%26i%3Dssc%26dl%3Dhttps%253A%252F%252Fwww.practicemock.com%252Fpricing%252Fmarketing%252Ffiles%252Fpdf%252Fstatistic-questions-for-ssc-cgl.pdf&amp;ref=13992\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Sign up to download a free PDF of Statistics Questions for SSC CGL<\/strong><\/a><\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Statistics Is Important for SSC CGL 2026?<\/h2>\n\n\n\n<p>Many candidates underestimate Statistics because they focus only on Arithmetic chapters such as Percentage, Ratio, Profit and Loss, and Time and Work. However, Statistics remains an important part of SSC examinations and frequently contributes direct questions.<\/p>\n\n\n\n<p>One of the biggest advantages of Statistics is that most questions are concept-driven. Once the formulas and concepts are clear, candidates can solve questions quickly and accurately.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits of Preparing Statistics<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Benefit<\/strong><\/td><td><strong>Impact in Exam<\/strong><\/td><\/tr><tr><td>Improves Conceptual Clarity<\/td><td>Helps in analytical questions<\/td><\/tr><tr><td>Formula-Based Questions<\/td><td>Faster solving speed<\/td><\/tr><tr><td>Useful for Tier 1<\/td><td>Direct Quant questions<\/td><\/tr><tr><td>Essential for JSO<\/td><td>Dedicated Tier 2 paper<\/td><\/tr><tr><td>High Accuracy Potential<\/td><td>Lower chance of silly mistakes<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Candidates who ignore Statistics often lose easy marks that could improve their overall rank.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">High-Weightage Statistics Topics for Tier 2 (JSO)<\/h2>\n\n\n\n<p>If you are appearing for Paper-II, you must master advanced analytical concepts beyond the basics. Focus your revision on these core units:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Probability Theory &amp; Distributions (8-10 Questions):<\/strong> Conditional probability, Bayes&#8217; theorem, and probability distributions (Binomial, Poisson, Normal, and Exponential).<\/li>\n\n\n\n<li><strong>Correlation &amp; Regression (8-10 Questions):<\/strong> Scatter diagrams, Spearman\u2019s rank correlation, simple correlation coefficients, and multiple\/partial regression (limited to three variables).<\/li>\n\n\n\n<li><strong>Measures of Central Tendency &amp; Dispersion (16-20 Questions):<\/strong> Mean, median, mode, standard deviation, quartile deviations, and relative dispersion.<\/li>\n\n\n\n<li><strong>Sampling Theory &amp; Statistical Inference (12-16 Questions):<\/strong> Hypothesis testing (small vs. large samples), T-test, Z-test, Chi-square test, F-statistics, and types of sampling errors.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/www.practicemock.com\/?next=https%3A%2F%2Fwww.practicemock.com%2Fs1pricing%2Findex.php%3Fc%3Dsscpro&amp;ref=12569\" target=\"_blank\" rel=\" noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"1141\" height=\"700\" src=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/10\/SSC-Packages.png\" alt=\"Budget-friendly online courses for SSC, Railways, and State exams, detailing 'SSC Pro' and 'SSC Prime' features.\" class=\"wp-image-183927\"\/><\/a><\/figure><\/div>\n\n\n<p><\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong><em>Join our exclusive Telegram group for expert guidance, personalized tips, and real-time solutions to boost your SSC exam prep. [<a href=\"https:\/\/t.me\/practicemockssc\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Click here to join now!<\/a>]<\/em><\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td colspan=\"2\"><strong>Related Articles<\/strong><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-post-wise-cut-off\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Post Wise Cut off<\/a><\/td><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-exam-difficulty-level\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Exam Difficulty Level<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/ssc-cgl-eligibility\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Eligibility<\/a><\/td><td><a target=\"_blank\" href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-topic-wise-weightage\/\" rel=\"noreferrer noopener\">SSC CGL Topic Wise Weightage<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-kya-hota-hai\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Kya Hota Hai<\/a><\/td><td><a target=\"_blank\" href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-typing-test-all-details\/\" rel=\"noreferrer noopener\">SSC CGL Typing Test<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-post-list\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Post List<\/a><\/td><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-salary\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Salary<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-exam-pattern-2026\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Exam Pattern<\/a><\/td><td><a target=\"_blank\" href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-syllabus\/\" rel=\"noreferrer noopener\">SSC CGL Syllabus<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-signature-size-and-photo-rules\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Signature Size and Photo Rules<\/a><\/td><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-most-scoring-topics\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Most Scoring Topics<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-previous-year-papers-with-solutions\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Previous Year Question Papers<\/a><\/td><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-best-books-for-preparation-revision\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Best Books for Preparation<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-revision-plan-15-days\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Revision Plan 15 days<\/a><\/td><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-notification\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Notification<\/a><\/td><\/tr><tr><td><a target=\"_blank\" href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-study-plan-2025\/\" rel=\"noreferrer noopener\">SSC CGL Study Plan<\/a><\/td><td><a href=\"https:\/\/www.practicemock.com\/blog\/ssc-cgl-preparation-strategy-2026\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Preparation Strategy<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>FAQs: Statistics for SSC CGL<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What is Statistics in SSC CGL?<\/strong><\/h3>\n\n\n\n<p>Statistics is a chapter within Quantitative Aptitude that includes concepts such as Mean, Median, Mode, Standard Deviation, Variance, Quartiles, Deciles, and Percentiles. It is important for both Tier 1 and Tier 2 preparation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Is Statistics important for SSC CGL Tier 1?<\/strong><\/h3>\n\n\n\n<p>Yes. SSC regularly asks Statistics-based questions in Tier 1 Quantitative Aptitude. Candidates can score easy marks if their concepts are clear.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Is there a separate Statistics paper in SSC CGL Tier 2?<\/strong><\/h3>\n\n\n\n<p>Yes. Candidates applying for the Junior Statistical Officer (JSO) post must appear for a dedicated Statistics paper in Tier 2.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Which Statistics topics are most important for SSC CGL?<\/strong><\/h3>\n\n\n\n<p>Mean, Median, Mode, Standard Deviation, Variance, Probability, Correlation, Regression, Sampling Theory, and Probability Distributions are among the most important topics.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What is the best way to prepare Statistics for SSC CGL?<\/strong><\/h3>\n\n\n\n<p>Start with basic concepts, learn formulas thoroughly, solve previous year questions, practice topic-wise tests, and attempt mock tests regularly.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Can I prepare Statistics without a mathematics background?<\/strong><\/h3>\n\n\n\n<p>Yes. Most Tier 1 Statistics questions are formula-based and can be mastered through consistent practice. Even for Tier 2 Statistics, conceptual clarity and regular question solving are more important than having an advanced mathematics background.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn Statistics for SSC CGL with important concepts, formulas, practice questions, and free PDF for Tier 1 &#038; Tier 2 preparation.<\/p>\n","protected":false},"author":25,"featured_media":168224,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[16],"tags":[],"class_list":["post-168211","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ssc-cgl"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Statistics for SSC CGL 2026: Tier 1 &amp; Tier 2 Formulas &amp; Questions<\/title>\n<meta name=\"description\" content=\"Learn Statistics for SSC CGL with important concepts, formulas, practice questions, solutions, and free PDF for Tier 1 &amp; Tier 2 preparation.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Statistics for SSC CGL 2026: Tier 1 &amp; Tier 2 Formulas &amp; Questions\" \/>\n<meta property=\"og:description\" content=\"Learn Statistics for SSC CGL with important concepts, formulas, practice questions, solutions, and free PDF for Tier 1 &amp; Tier 2 preparation.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/\" \/>\n<meta property=\"og:site_name\" content=\"Practicemock\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-14T11:00:32+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-14T11:00:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/Statistics-for-SSC-CGL.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Abhishek Jatariya\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Abhishek Jatariya\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Statistics for SSC CGL 2026: Tier 1 & Tier 2 Formulas & Questions","description":"Learn Statistics for SSC CGL with important concepts, formulas, practice questions, solutions, and free PDF for Tier 1 & Tier 2 preparation.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/","og_locale":"en_US","og_type":"article","og_title":"Statistics for SSC CGL 2026: Tier 1 & Tier 2 Formulas & Questions","og_description":"Learn Statistics for SSC CGL with important concepts, formulas, practice questions, solutions, and free PDF for Tier 1 & Tier 2 preparation.","og_url":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/","og_site_name":"Practicemock","article_published_time":"2026-07-14T11:00:32+00:00","article_modified_time":"2026-07-14T11:00:35+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/Statistics-for-SSC-CGL.png","type":"image\/png"}],"author":"Abhishek Jatariya","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Abhishek Jatariya","Est. reading time":"12 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/#article","isPartOf":{"@id":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/"},"author":{"name":"Abhishek Jatariya","@id":"https:\/\/www.practicemock.com\/blog\/#\/schema\/person\/c31174d4112cf4e827e441653855a4df"},"headline":"Statistics for SSC CGL 2026: Tier 1 &amp; Tier 2 Formulas &amp; Questions","datePublished":"2026-07-14T11:00:32+00:00","dateModified":"2026-07-14T11:00:35+00:00","mainEntityOfPage":{"@id":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/"},"wordCount":1836,"commentCount":0,"image":{"@id":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/#primaryimage"},"thumbnailUrl":"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/Statistics-for-SSC-CGL.png","articleSection":["SSC CGL"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/","url":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/","name":"Statistics for SSC CGL 2026: Tier 1 & Tier 2 Formulas & Questions","isPartOf":{"@id":"https:\/\/www.practicemock.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/#primaryimage"},"image":{"@id":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/#primaryimage"},"thumbnailUrl":"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/Statistics-for-SSC-CGL.png","datePublished":"2026-07-14T11:00:32+00:00","dateModified":"2026-07-14T11:00:35+00:00","author":{"@id":"https:\/\/www.practicemock.com\/blog\/#\/schema\/person\/c31174d4112cf4e827e441653855a4df"},"description":"Learn Statistics for SSC CGL with important concepts, formulas, practice questions, solutions, and free PDF for Tier 1 & Tier 2 preparation.","breadcrumb":{"@id":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/#primaryimage","url":"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/Statistics-for-SSC-CGL.png","contentUrl":"https:\/\/www.practicemock.com\/blog\/wp-content\/uploads\/2025\/08\/Statistics-for-SSC-CGL.png","width":1200,"height":675,"caption":"Statistics Questions for SSC CGL"},{"@type":"BreadcrumbList","@id":"https:\/\/www.practicemock.com\/blog\/statistics-for-ssc-cgl\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.practicemock.com\/blog\/"},{"@type":"ListItem","position":2,"name":"SSC CGL","item":"https:\/\/www.practicemock.com\/blog\/category\/ssc-cgl\/"},{"@type":"ListItem","position":3,"name":"Statistics for SSC CGL"}]},{"@type":"WebSite","@id":"https:\/\/www.practicemock.com\/blog\/#website","url":"https:\/\/www.practicemock.com\/blog\/","name":"Practicemock","description":"Practice | Analyse | Excel","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.practicemock.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.practicemock.com\/blog\/#\/schema\/person\/c31174d4112cf4e827e441653855a4df","name":"Abhishek Jatariya","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/9772e4cf088bd611a88ade1061b1e4faa0cfb9f1bbfb91714bd7d8c9af75c6b3?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/9772e4cf088bd611a88ade1061b1e4faa0cfb9f1bbfb91714bd7d8c9af75c6b3?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/9772e4cf088bd611a88ade1061b1e4faa0cfb9f1bbfb91714bd7d8c9af75c6b3?s=96&d=mm&r=g","caption":"Abhishek Jatariya"},"description":"Hello Guys, I am Abhishek Jatariya (B.Tech (IT), HBTU Kanpur). At PracticeMock I am a dedicated Government Job aspirant turned passionate Content writer &amp; Content creator. My blogs are a one-stop destination for accurate and comprehensive information on exams like SSC, Railways, and Other PSU Jobs. I am on a mission to provide you with all the details about these exams you need, conveniently in one place. I hope you will like my writing.","sameAs":["https:\/\/in.linkedin.com\/in\/abhishek-jatariya"],"url":"https:\/\/www.practicemock.com\/blog\/author\/abhishek-jatariya\/"}]}},"_links":{"self":[{"href":"https:\/\/www.practicemock.com\/blog\/wp-json\/wp\/v2\/posts\/168211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.practicemock.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.practicemock.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.practicemock.com\/blog\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/www.practicemock.com\/blog\/wp-json\/wp\/v2\/comments?post=168211"}],"version-history":[{"count":0,"href":"https:\/\/www.practicemock.com\/blog\/wp-json\/wp\/v2\/posts\/168211\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.practicemock.com\/blog\/wp-json\/wp\/v2\/media\/168224"}],"wp:attachment":[{"href":"https:\/\/www.practicemock.com\/blog\/wp-json\/wp\/v2\/media?parent=168211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.practicemock.com\/blog\/wp-json\/wp\/v2\/categories?post=168211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.practicemock.com\/blog\/wp-json\/wp\/v2\/tags?post=168211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}