{"id":230888,"date":"2025-10-16T18:18:52","date_gmt":"2025-10-16T12:48:52","guid":{"rendered":"https:\/\/www.oliveboard.in\/blog\/?p=230888"},"modified":"2025-10-16T23:03:56","modified_gmt":"2025-10-16T17:33:56","slug":"collection-classification-and-presentation-of-data-for-ssc-cgl","status":"publish","type":"post","link":"https:\/\/www.oliveboard.in\/blog\/collection-classification-and-presentation-of-data-for-ssc-cgl\/","title":{"rendered":"Collection, Classification &amp; Presentation of Data 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\/collection-classification-and-presentation-of-data-for-ssc-cgl\/#1_What_is_Data_in_Statistics\" >1. What is Data in Statistics?<\/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\/collection-classification-and-presentation-of-data-for-ssc-cgl\/#2_Types_of_Data\" >2. Types of Data<\/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\/collection-classification-and-presentation-of-data-for-ssc-cgl\/#3_Collection_of_Data\" >3. Collection of Data<\/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\/collection-classification-and-presentation-of-data-for-ssc-cgl\/#4_Classification_of_Data\" >4. Classification of Data<\/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\/collection-classification-and-presentation-of-data-for-ssc-cgl\/#5_Presentation_of_Data\" >5. Presentation of Data<\/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\/collection-classification-and-presentation-of-data-for-ssc-cgl\/#6_Importance_of_Classification_and_Presentation\" >6. Importance of Classification and Presentation<\/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\/collection-classification-and-presentation-of-data-for-ssc-cgl\/#7_Common_Formulas_Related_to_Data_For_SSC_CGL_Tier_2\" >7. Common Formulas Related to Data (For SSC CGL Tier 2)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.oliveboard.in\/blog\/collection-classification-and-presentation-of-data-for-ssc-cgl\/#8_Tips_to_Study_this_Topic_for_SSC_CGL_Tier_2\" >8. Tips to Study this Topic for SSC CGL Tier 2<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.oliveboard.in\/blog\/collection-classification-and-presentation-of-data-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-10\" href=\"https:\/\/www.oliveboard.in\/blog\/collection-classification-and-presentation-of-data-for-ssc-cgl\/#FAQs_on_Collection_Classification_and_Presentation_of_Data\" >FAQs on Collection, Classification, and Presentation of Data<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>The topic Collection, Classification, and Presentation of Data is one of the most basic yet important parts of the SSC CGL Tier 2 Statistics syllabus for <a href=\"https:\/\/www.oliveboard.in\/ssc-jso\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC JSO<\/a> post. In simple words, statistics means studying and understanding data, how it is collected, organized, and shown in a useful form.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-1-what-is-data-in-statistics\"><span class=\"ez-toc-section\" id=\"1_What_is_Data_in_Statistics\"><\/span><strong>1. What is Data in Statistics?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Data<\/strong> means a set of facts or numbers collected for analysis. For example, the marks of students in a class, rainfall in a city, or population of a country all are examples of data. In statistics, data helps us make decisions, find patterns, and understand real-world situations.<\/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 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-types-of-data\"><span class=\"ez-toc-section\" id=\"2_Types_of_Data\"><\/span><strong>2. Types of Data<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Data can be of two main types, Primary and Secondary. Let\u2019s understand both with examples.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Type of Data<\/strong><\/strong><\/td><td><strong><strong>Meaning<\/strong><\/strong><\/td><td><strong><strong>Example<\/strong><\/strong><\/td><\/tr><tr><td><strong>Primary Data<\/strong><\/td><td>Data collected for the first time by the researcher.<\/td><td>Collecting marks of your class students directly.<\/td><\/tr><tr><td><strong>Secondary Data<\/strong><\/td><td>Data that is already collected by others and used again.<\/td><td>Data from census, books, or government reports.<\/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\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/ssc-chsl\/?ref=contmk-db\" target=\"_blank\" rel=\"noreferrer noopener\">Explore all SSC CHSL Courses here<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-3-collection-of-data\"><span class=\"ez-toc-section\" id=\"3_Collection_of_Data\"><\/span><strong>3. Collection of Data<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>After understanding what data is, the next step is collecting it properly. There are two main ways collecting primary data and secondary data.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-a-methods-of-collecting-primary-data\"><strong>a) Methods of Collecting Primary Data<\/strong><\/h3>\n\n\n\n<p>Primary data is collected directly from the source. Here are some common methods:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Method<\/strong><\/strong><\/td><td><strong><strong>Explanation<\/strong><\/strong><\/td><\/tr><tr><td><strong>Personal Investigation<\/strong><\/td><td>Researcher collects data personally from respondents.<\/td><\/tr><tr><td><strong>Through Questionnaire<\/strong><\/td><td>Data collected using a list of questions.<\/td><\/tr><tr><td><strong>Indirect Oral Investigation<\/strong><\/td><td>Data collected by asking questions through others.<\/td><\/tr><tr><td><strong>Observation Method<\/strong><\/td><td>Data gathered by observing people or situations.<\/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<h3 class=\"wp-block-heading\" id=\"h-b-sources-of-secondary-data\"><strong>b) Sources of Secondary Data<\/strong><\/h3>\n\n\n\n<p>Secondary data is already available and is collected from published or official sources.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Source<\/strong><\/strong><\/td><td><strong><strong>Examples<\/strong><\/strong><\/td><\/tr><tr><td><strong>Government Reports<\/strong><\/td><td>Census data, Economic Surveys<\/td><\/tr><tr><td><strong>Organizations<\/strong><\/td><td>RBI, NSSO, CSO, NITI Aayog<\/td><\/tr><tr><td><strong>Books and Journals<\/strong><\/td><td>Statistical Yearbooks, Research Papers<\/td><\/tr><tr><td><strong>Websites and Databases<\/strong><\/td><td>Official portals like data.gov.in<\/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\"><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-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-classification-of-data\"><span class=\"ez-toc-section\" id=\"4_Classification_of_Data\"><\/span><strong>4. Classification of Data<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Once data is collected, it needs to be organized or grouped properly. This process is called classification. It helps make large data easy to understand and compare.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-types-of-classification\"><strong>Types of Classification<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Type of Classification<\/strong><\/strong><\/td><td><strong><strong>Basis<\/strong><\/strong><\/td><td><strong><strong>Example<\/strong><\/strong><\/td><\/tr><tr><td><strong>Qualitative Classification<\/strong><\/td><td>Based on qualities or attributes<\/td><td>Gender (Male\/Female), Religion<\/td><\/tr><tr><td><strong>Quantitative Classification<\/strong><\/td><td>Based on numerical values<\/td><td>Income, Age, Height<\/td><\/tr><tr><td><strong>Geographical Classification<\/strong><\/td><td>Based on place or region<\/td><td>State-wise or city-wise population<\/td><\/tr><tr><td><strong>Chronological Classification<\/strong><\/td><td>Based on time<\/td><td>Year-wise or month-wise data<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-example-explanation\"><strong>Example Explanation:<\/strong><\/h3>\n\n\n\n<p>If you have data of students\u2019 marks and gender, you can classify it as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Qualitative:<\/strong> Male and Female<\/li>\n\n\n\n<li><strong>Quantitative:<\/strong> Marks in Maths (0\u201320, 21\u201340, etc.)<\/li>\n<\/ul>\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-presentation-of-data\"><span class=\"ez-toc-section\" id=\"5_Presentation_of_Data\"><\/span><strong>5. Presentation of Data<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>After classification, the next step is presentation showing data in a simple and meaningful form. Presentation makes data easier to read and understand. There are three main ways to present data:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-a-textual-presentation\"><strong>a) Textual Presentation<\/strong><\/h3>\n\n\n\n<p>In this form, data is written in a paragraph.<br>It is useful when the data is small and easy to describe.<\/p>\n\n\n\n<p><strong>Example:<\/strong><br>\u201cThe population of India increased from 121 crore in 2011 to 138 crore in 2021.\u201d<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-b-tabular-presentation\"><strong>b) Tabular Presentation<\/strong><\/h3>\n\n\n\n<p>In this form, data is arranged in rows and columns.<br>It is the most common and easy-to-read method of presentation.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Year<\/strong><\/strong><\/td><td><strong><strong>Population (in crore)<\/strong><\/strong><\/td><\/tr><tr><td>2011<\/td><td>121<\/td><\/tr><tr><td>2021<\/td><td>138<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Explanation:<\/strong><br>This table helps compare population growth between two years quickly.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-c-diagrammatic-and-graphical-presentation\"><strong>c) Diagrammatic and Graphical Presentation<\/strong><\/h3>\n\n\n\n<p>Sometimes, visual representation of data gives a clearer picture. This includes bar graphs, pie charts, histograms, and frequency polygons.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Type of Diagram<\/strong><\/strong><\/td><td><strong><strong>Purpose<\/strong><\/strong><\/td><\/tr><tr><td><strong>Bar Diagram<\/strong><\/td><td>Compare different categories.<\/td><\/tr><tr><td><strong>Pie Chart<\/strong><\/td><td>Show percentage distribution.<\/td><\/tr><tr><td><strong>Histogram<\/strong><\/td><td>Represent frequency distribution.<\/td><\/tr><tr><td><strong>Frequency Polygon<\/strong><\/td><td>Show data trends for continuous series.<\/td><\/tr><tr><td><strong>Ogive (Cumulative Curve)<\/strong><\/td><td>Used to find median or quartiles.<\/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\"><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-6-importance-of-classification-and-presentation\"><span class=\"ez-toc-section\" id=\"6_Importance_of_Classification_and_Presentation\"><\/span><strong>6. Importance of Classification and Presentation<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Understanding and showing data properly is important because:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It makes large data easy to understand.<\/li>\n\n\n\n<li>It helps in comparison between groups.<\/li>\n\n\n\n<li>It shows trends and patterns clearly.<\/li>\n\n\n\n<li>It is useful for making conclusions and decisions.<\/li>\n<\/ul>\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\/blog\/ssc-cgl-tier-2-previous-year-paper\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Tier 2 Previous Year Paper, Download Free PDF<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-7-common-formulas-related-to-data-for-ssc-cgl-tier-2\"><span class=\"ez-toc-section\" id=\"7_Common_Formulas_Related_to_Data_For_SSC_CGL_Tier_2\"><\/span><strong>7. Common Formulas Related to Data (For SSC CGL Tier 2)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Concept<\/strong><\/strong><\/td><td><strong><strong>Formula<\/strong><\/strong><\/td><\/tr><tr><td><strong>Class Width<\/strong><\/td><td>Upper Limit \u2212 Lower Limit<\/td><\/tr><tr><td><strong>Class Mark (Midpoint)<\/strong><\/td><td>(Upper Limit + Lower Limit) \u00f7 2<\/td><\/tr><tr><td><strong>Cumulative Frequency<\/strong><\/td><td>Sum of all frequencies up to a class<\/td><\/tr><tr><td><strong>Percentage<\/strong><\/td><td>(Part \u00f7 Total) \u00d7 100<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Example:<\/strong><br>If a class has 10, 20, 30 marks and total students = 60,<br>then % of students scoring 20 marks = (20 \u00f7 60) \u00d7 100 = 33.33%<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-8-tips-to-study-this-topic-for-ssc-cgl-tier-2\"><span class=\"ez-toc-section\" id=\"8_Tips_to_Study_this_Topic_for_SSC_CGL_Tier_2\"><\/span><strong>8. Tips to Study this Topic for SSC CGL Tier 2<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Below are the tips to study this topic for SSC CGL Tier 2:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Understand definitions and differences clearly.<\/li>\n\n\n\n<li>Practice classification and presentation questions from PYQs.<\/li>\n\n\n\n<li>Revise diagrams like histogram and pie chart regularly.<\/li>\n\n\n\n<li>Attempt mock tests to strengthen conceptual clarity.<\/li>\n<\/ul>\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<p>Below are the key takeaways:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Data can be primary or secondary.<\/li>\n\n\n\n<li>It must be classified properly for easy understanding.<\/li>\n\n\n\n<li>Presentation can be textual, tabular, or graphical.<\/li>\n\n\n\n<li>This topic forms the base for other concepts like mean, median, and dispersion in SSC CGL Tier 2.<\/li>\n<\/ul>\n\n\n\n<p>Check out<a href=\"https:\/\/www.oliveboard.in\/ssc-cgl-books\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\"> <strong><\/strong><\/a><strong><a href=\"https:\/\/www.oliveboard.in\/ssc-cgl-exam-pattern\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Exam Pattern<\/a><\/strong><\/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 aligncenter\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/ssc-cgl-live-test\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">Attempt SSC CGL Tier 2 Live Test Here<\/a><\/div>\n<\/div>\n\n\n\n<p>Qualified SSC CGL Tier 1? Get ready for Tier 2 Exam, check out the below blogs:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Blog Links<\/strong><\/td><td><strong>Blog Links<\/strong><\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-tier-2-paper-2-strategy\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Tier 2 Paper 2 Strategy<\/a><\/td><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-tier-2-study-plan-2025\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Tier 2 Study Plan 2025<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-tier-2-paper-2-study-plan\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Tier 2 Paper 2 Study Plan<\/a><\/td><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-computer-awareness\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Computer Awareness<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-tier-2-last-minute-tips\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Tier 2 Last Minute Tips<\/a><\/td><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-tier-2-paper-1-tips\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Tier 2 Paper 1 Tips<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-tier-2-previous-year-paper\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Tier 2 Previous Year Paper<\/a><\/td><td><a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-tier-2-weightage-of-english-and-quant\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Tier 2 Weightage of English &amp; Quant<\/a><\/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\/ssc-cgl\/?ref=contmk-db\" target=\"_blank\" rel=\"noreferrer noopener\">Explore all SSC CGL Courses Here<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faqs-on-collection-classification-and-presentation-of-data\"><span class=\"ez-toc-section\" id=\"FAQs_on_Collection_Classification_and_Presentation_of_Data\"><\/span><strong>FAQs on Collection, Classification, and Presentation of Data<\/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-1760618325117\"><strong class=\"schema-faq-question\"><strong>Q1. What is meant by data in statistics?<\/strong><\/strong> <p class=\"schema-faq-answer\">Ans. Data means a collection of facts or figures used for analysis.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760618330420\"><strong class=\"schema-faq-question\"><strong>Q2. What is the difference between primary and secondary data?<\/strong><\/strong> <p class=\"schema-faq-answer\">Ans. Primary data is collected for the first time, while secondary data is already collected by someone else.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760618336104\"><strong class=\"schema-faq-question\"><strong>Q3. What are the three main ways of presenting data?<\/strong><\/strong> <p class=\"schema-faq-answer\">Ans. Textual, tabular, and diagrammatic (graphical) presentation.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760618341021\"><strong class=\"schema-faq-question\"><strong>Q4. Why is classification of data important?<\/strong><\/strong> <p class=\"schema-faq-answer\">Ans. It makes large data sets easier to study and compare.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760618345220\"><strong class=\"schema-faq-question\"><strong>Q5. Which diagrams are used for frequency distribution?<\/strong><\/strong> <p class=\"schema-faq-answer\">Ans. Histogram and frequency polygon are used for showing frequency data.<\/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>The topic Collection, Classification, and Presentation of Data is one of the most basic yet important parts of the SSC<\/p>\n","protected":false},"author":65,"featured_media":230892,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-230888","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles","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>Collection, Classification &amp; 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