{"id":230988,"date":"2025-10-17T14:38:07","date_gmt":"2025-10-17T09:08:07","guid":{"rendered":"https:\/\/www.oliveboard.in\/blog\/?p=230988"},"modified":"2025-10-27T13:15:10","modified_gmt":"2025-10-27T07:45:10","slug":"sampling-theory-for-ssc-cgl","status":"publish","type":"post","link":"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/","title":{"rendered":"Sampling Theory for SSC CGL Tier 2 Paper 2"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_77 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of content<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/#1_Population_and_Sample\" >1. Population and Sample<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/#2_Sampling_Techniques\" >2. Sampling Techniques<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/#3_Sampling_Errors\" >3. Sampling Errors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/#4_Sampling_Distribution\" >4. Sampling Distribution<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/#5_Key_Formulas_for_SSC_CGL\" >5. Key Formulas for SSC CGL<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/#Key_Takeaways\" >Key Takeaways<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/#FAQs_on_Sampling_Theory\" >FAQs on Sampling Theory<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>In SSC CGL Tier 2, <a href=\"https:\/\/www.oliveboard.in\/ssc-jso\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC JSO<\/a>, Sampling Theory is an important part of Statistics. Understanding sampling helps in making inferences about a population using a sample. This blog covers population, sample, sampling techniques, errors, and sampling distributions with easy explanations.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-1-population-and-sample\"><span class=\"ez-toc-section\" id=\"1_Population_and_Sample\"><\/span><strong>1. Population and Sample<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In statistics, understanding the difference between a population and a sample is fundamental, as it forms the basis for collecting data and making inferences about a larger group.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Term<\/strong><\/strong><\/td><td><strong><strong>Definition<\/strong><\/strong><\/td><td><strong><strong>Example<\/strong><\/strong><\/td><\/tr><tr><td><strong>Population<\/strong><\/td><td>Complete set of items or individuals under study<\/td><td>All employees of a company<\/td><\/tr><tr><td><strong>Sample<\/strong><\/td><td>Subset of population selected for analysis<\/td><td>100 employees selected randomly<\/td><\/tr><\/tbody><\/table><\/figure>\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 aligncenter\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/ssc-cgl-mock-test\/?ref=Contms&amp;utm_medium=Organic&amp;utm_source=Blog&amp;utm_campaign=Contms\" target=\"_blank\" rel=\"noreferrer noopener\">Attempt Free New Interface SSC CGL Tier 2 Mock test<\/a><\/div>\n<\/div>\n\n\n\n<p>Also check out <a href=\"https:\/\/www.oliveboard.in\/blog\/most-repeated-quantitative-aptitude-questions-for-ssc-cgl-tier-2\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Most Repeated Quantitative Aptitude Questions for SSC CGL Tier 2<\/strong><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-sampling-techniques\"><span class=\"ez-toc-section\" id=\"2_Sampling_Techniques\"><\/span><strong>2. Sampling Techniques<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Sampling techniques are divided into probability and non-probability methods.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Type<\/strong><\/strong><\/td><td><strong><strong>Technique<\/strong><\/strong><\/td><td><strong><strong>Description<\/strong><\/strong><\/td><td><strong><strong>Use \/ Example<\/strong><\/strong><\/td><\/tr><tr><td>Probability<\/td><td>Simple Random Sampling<\/td><td>Every item has an equal chance<\/td><td>Drawing 50 names randomly<\/td><\/tr><tr><td>Probability<\/td><td>Systematic Sampling<\/td><td>Every kth item is selected<\/td><td>Every 10th student in a list<\/td><\/tr><tr><td>Probability<\/td><td>Stratified Sampling<\/td><td>Population divided into strata, samples from each<\/td><td>Sample of students by grade<\/td><\/tr><tr><td>Probability<\/td><td>Cluster Sampling<\/td><td>Population divided into clusters, select entire clusters<\/td><td>Randomly select 3 schools<\/td><\/tr><tr><td>Non-Probability<\/td><td>Convenience Sampling<\/td><td>Select easily available items<\/td><td>Survey friends in a class<\/td><\/tr><tr><td>Non-Probability<\/td><td>Judgmental \/ Purposive<\/td><td>Select based on researcher\u2019s judgment<\/td><td>Expert opinion survey<\/td><\/tr><\/tbody><\/table><\/figure>\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 aligncenter\"><a class=\"wp-block-button__link has-text-align-center wp-element-button\" href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-tier-2-weightage-of-english-and-quant\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">Check SSC CGL Tier 2 Weightage of English and Quant<\/a><\/div>\n<\/div>\n\n\n\n<p>Also check out <a href=\"https:\/\/www.oliveboard.in\/blog\/most-repeated-english-questions-for-ssc-cgl-tier-2\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Most Repeated Quantitative Aptitude Questions for SSC CGL Tier 2<\/strong><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-3-sampling-errors\"><span class=\"ez-toc-section\" id=\"3_Sampling_Errors\"><\/span><strong>3. Sampling Errors<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Sampling errors<\/strong> occur when a sample does not perfectly represent the population.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Error Type<\/strong><\/strong><\/td><td><strong><strong>Description<\/strong><\/strong><\/td><td><strong><strong>Example<\/strong><\/strong><\/td><\/tr><tr><td><strong>Random Error<\/strong><\/td><td>Due to chance variation in sample<\/td><td>Selecting 100 students randomly may slightly differ from population mean<\/td><\/tr><tr><td><strong>Systematic Error \/ Bias<\/strong><\/td><td>Consistent error in one direction<\/td><td>Survey conducted only in morning \u2192 misses absent students<\/td><\/tr><tr><td><strong>Non-Sampling Error<\/strong><\/td><td>Errors not related to sampling<\/td><td>Data entry mistakes, misreporting<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Check out <a href=\"https:\/\/www.oliveboard.in\/blog\/most-repeated-reasoning-and-general-intelligence-questions-for-ssc-cgl-tier-2\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Most Repeated Reasoning Questions for SSC CGL Tier 2<\/strong><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-4-sampling-distribution\"><span class=\"ez-toc-section\" id=\"4_Sampling_Distribution\"><\/span><strong>4. Sampling Distribution<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" src=\"https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Screen-Shot-2025-10-21-at-3.12.24-PM-1024x538.webp\" alt=\"\" class=\"wp-image-231139\" srcset=\"https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Screen-Shot-2025-10-21-at-3.12.24-PM-1024x538.webp 1024w, https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Screen-Shot-2025-10-21-at-3.12.24-PM-768x404.webp 768w, https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Screen-Shot-2025-10-21-at-3.12.24-PM-150x79.webp 150w, https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Screen-Shot-2025-10-21-at-3.12.24-PM.webp 1530w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\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 wp-element-button\" href=\"https:\/\/www.oliveboard.in\/ssc-cgl-score-calculator\/?ref-contmk-scsc\" target=\"_blank\" rel=\"noreferrer noopener\">Calculate your Score using sSC CGL Tier 1 Score Calculator<\/a><\/div>\n<\/div>\n\n\n\n<p>Check out <a href=\"https:\/\/www.oliveboard.in\/blog\/most-repeated-computer-awareness-questions-for-ssc-cgl-tier-2\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Most Repeated Computer Awareness Questions for SSC CGL Tier 2<\/strong><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-5-key-formulas-for-ssc-cgl\"><span class=\"ez-toc-section\" id=\"5_Key_Formulas_for_SSC_CGL\"><\/span><strong>5. Key Formulas for SSC CGL<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>In SSC CGL Tier 2, memorizing key formulas for sampling theory helps quickly calculate sample statistics, standard errors, and make accurate inferences about the population.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"284\" src=\"https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Screen-Shot-2025-10-21-at-3.14.16-PM-1024x284.webp\" alt=\"\" class=\"wp-image-231140\" srcset=\"https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Screen-Shot-2025-10-21-at-3.14.16-PM-1024x284.webp 1024w, https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Screen-Shot-2025-10-21-at-3.14.16-PM-768x213.webp 768w, https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Screen-Shot-2025-10-21-at-3.14.16-PM-150x42.webp 150w, https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Screen-Shot-2025-10-21-at-3.14.16-PM.webp 1530w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\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 wp-element-button\" href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-tier-2-books\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">Check SSC CGL Tier 2 Books<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-key-takeaways\"><span class=\"ez-toc-section\" id=\"Key_Takeaways\"><\/span><strong>Key Takeaways <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Population is the whole group, sample is a subset.<\/li>\n\n\n\n<li>Probability sampling \u2192 each element has known chance; Non-probability \u2192 chance unknown.<\/li>\n\n\n\n<li>Sampling errors can be random or systematic.<\/li>\n\n\n\n<li>Sampling distribution \u2192 distribution of sample statistics; CLT allows normal approximation for large samples.<\/li>\n\n\n\n<li>Standard error quantifies sample variability.<\/li>\n<\/ul>\n\n\n\n<p>Check other SSC JSO related blogs:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Blogs<\/strong><\/strong><\/td><td><strong>Blogs<\/strong><\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/ssc-jso-mock-test\/?ref=contmk-blogs\">SSC JSO Mock Test<\/a><\/td><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-jso-books\/?ref=contmk-blogs\">SSC JSO Books<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-jso-cutoff\/?ref=contmk-blogs\">SSC JSO Cut Off<\/a><\/td><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-jso-promotion\/?ref=contmk-blogs\">SSC JSO Promotion<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faqs-on-sampling-theory\"><span class=\"ez-toc-section\" id=\"FAQs_on_Sampling_Theory\"><\/span><strong>FAQs on Sampling Theory<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1760691434907\"><strong class=\"schema-faq-question\"><strong>Q1. What is the difference between population and sample?<\/strong><\/strong> <p class=\"schema-faq-answer\">Population is the whole group; sample is a subset used for analysis.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760691439976\"><strong class=\"schema-faq-question\"><strong>Q2. What is stratified sampling?<\/strong><\/strong> <p class=\"schema-faq-answer\">Divide population into strata and select samples from each stratum.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760691444494\"><strong class=\"schema-faq-question\"><strong>Q3. What is a sampling error?<\/strong><\/strong> <p class=\"schema-faq-answer\">Error due to difference between sample statistics and population parameters.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760691456041\"><strong class=\"schema-faq-question\"><strong>Q4. What is Central Limit Theorem?<\/strong><\/strong> <p class=\"schema-faq-answer\">For large sample size, the distribution of sample mean is approximately normal regardless of population shape.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1761551090802\"><strong class=\"schema-faq-question\"><strong>Q3. What are the main types of sampling techniques?<\/strong><\/strong> <p class=\"schema-faq-answer\">Sampling techniques are of two main types:<br\/>Probability sampling \u2013 each element has a known chance of selection (e.g., random, stratified).<br\/>Non-probability sampling \u2013 selection based on convenience or judgment.<\/p> <\/div> <\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<ul class=\"wp-block-latest-posts__list is-grid columns-3 wp-block-latest-posts\"><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/active-passive-voice-for-ssc-exams\/\">Active and Passive Voice Questions for SSC Exams 2026, Attempt Now<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/history-notes\/\">Free History Notes PDF for SSC, Civil Services, UPSSSC &#038; Railways | Download Now<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/profit-and-loss-concept\/\">Profit and Loss for SSC, Concepts, Formulas &amp; Practice Questions<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-important-questions\/\">SSC CGL Important Questions, Solve Here<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/ssc-ancient-history\/\">SSC Ancient history, Stone Age &amp; Indus Valley Civilization, Free PDF<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/geometry-triangles\/\">Geometry Triangles Notes Free Ebook for SSC Exams, Download Now<\/a><\/li>\n<\/ul>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>In SSC CGL Tier 2, SSC JSO, Sampling Theory is an important part of Statistics. Understanding sampling helps in making<\/p>\n","protected":false},"author":65,"featured_media":230998,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,5217,10231,63],"tags":[],"class_list":["post-230988","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles","category-ssc-prep","category-ssc-railways","category-ssc-exams","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.6 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Sampling Theory for SSC CGL Tier 2 Paper 2<\/title>\n<meta name=\"description\" content=\"Learn Sampling Theory for SSC CGL Tier 2 JSO ,population, sample, sampling techniques, errors, sampling distribution, and key formulas with examples.\" \/>\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.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sampling Theory for SSC CGL Tier 2 Paper 2\" \/>\n<meta property=\"og:description\" content=\"In SSC CGL Tier 2, SSC JSO, Sampling Theory is an important part of Statistics. Understanding sampling helps in making inferences about a population using\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/\" \/>\n<meta property=\"og:site_name\" content=\"Oliveboard\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Oliveboard\" \/>\n<meta property=\"article:published_time\" content=\"2025-10-17T09:08:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-27T07:45:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Sampling-theory-.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"730\" \/>\n\t<meta property=\"og:image:height\" content=\"480\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Mahima Khurana\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Oliveboard\" \/>\n<meta name=\"twitter:site\" content=\"@Oliveboard\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mahima Khurana\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/\"},\"author\":{\"name\":\"Mahima Khurana\",\"@id\":\"https:\/\/www.oliveboard.in\/blog\/#\/schema\/person\/2f25f4d24adbf225bc11e6a0a4bcad8b\"},\"headline\":\"Sampling Theory for SSC CGL Tier 2 Paper 2\",\"datePublished\":\"2025-10-17T09:08:07+00:00\",\"dateModified\":\"2025-10-27T07:45:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/\"},\"wordCount\":554,\"publisher\":{\"@id\":\"https:\/\/www.oliveboard.in\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.oliveboard.in\/blog\/sampling-theory-for-ssc-cgl\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.oliveboard.in\/blog\/wp-content\/uploads\/2025\/10\/Sampling-theory-.webp\",\"articleSection\":[\"Articles\",\"SSC\",\"SSC &amp; 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