{"id":126488,"date":"2023-09-07T15:50:00","date_gmt":"2023-09-07T10:20:00","guid":{"rendered":"https:\/\/www.kopykitab.com\/blog\/?p=126488"},"modified":"2023-11-03T14:21:44","modified_gmt":"2023-11-03T08:51:44","slug":"rd-sharma-class-10-solutions-chapter-7-exercise-7-2","status":"publish","type":"post","link":"https:\/\/www.kopykitab.com\/blog\/rd-sharma-class-10-solutions-chapter-7-exercise-7-2\/","title":{"rendered":"RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 (Updated for 2023)"},"content":{"rendered":"\n<p><img class=\"alignnone size-full wp-image-126499\" src=\"https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2021\/09\/RD-Sharma-Class-10-Solutions-Chapter-7-Exercise-7.2.jpg\" alt=\"RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2\" width=\"1200\" height=\"675\" srcset=\"https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2021\/09\/RD-Sharma-Class-10-Solutions-Chapter-7-Exercise-7.2.jpg 1200w, https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2021\/09\/RD-Sharma-Class-10-Solutions-Chapter-7-Exercise-7.2-768x432.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p><strong>RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2:\u00a0<\/strong>Students can use the <a href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-class-10-solutions-for-maths\/\"><strong>RD Sharma Class 10 Solutions<\/strong><\/a> to get confidence in solving Class 10 Mathematics problems. Download <a href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-class-10-solutions-chapter-7-statistics\/\"><strong>RD Sharma Solutions for Class 10 Maths Chapter 7<\/strong><\/a> Exercise 7.2, PDF, for any clarifications or explanations on this exercise.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_47_1 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\">Table of Contents<\/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=\"ez-toc-toggle-icon-1\"><label for=\"item-69d7a1ded9970\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #000000;color:#000000\" 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: #000000;color:#000000\" 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><\/label><input  type=\"checkbox\" id=\"item-69d7a1ded9970\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-visibility-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.kopykitab.com\/blog\/rd-sharma-class-10-solutions-chapter-7-exercise-7-2\/#download-rd-sharma-class-10-solutions-chapter-7-exercise-72-free-pdf\" title=\"Download RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 Free PDF\">Download RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 Free PDF<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-class-10-solutions-chapter-7-exercise-7-2\/#access-answers-to-rd-sharma-solutions-class-10-maths-chapter-7-exercise-72-important-question-with-answers\" title=\"Access answers to RD Sharma Solutions Class 10 Maths Chapter 7 Exercise 7.2- Important Question with Answers\">Access answers to RD Sharma Solutions Class 10 Maths Chapter 7 Exercise 7.2- Important Question with Answers<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-class-10-solutions-chapter-7-exercise-7-2\/#faqs-on-rd-sharma-class-10-solutions-chapter-7-exercise-72\" title=\"FAQs on RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2\">FAQs on RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-class-10-solutions-chapter-7-exercise-7-2\/#where-can-i-get-rd-sharma-solutions-class-10-maths-chapter-7-exercise-72-free-pdf\" title=\"Where can I get RD Sharma Solutions Class 10 Maths Chapter 7 Exercise 7.2 Free PDF?\">Where can I get RD Sharma Solutions Class 10 Maths Chapter 7 Exercise 7.2 Free PDF?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-class-10-solutions-chapter-7-exercise-7-2\/#what-are-the-benefits-of-using-rd-sharma-class-10-solutions-chapter-7-exercise-72\" title=\"What are the benefits of using RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2?\">What are the benefits of using RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-class-10-solutions-chapter-7-exercise-7-2\/#how-is-rd-sharma-class-10-solutions-chapter-7-exercise-72-helpful-for-board-exams\" title=\"How is RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 helpful for board exams?\">How is RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 helpful for board exams?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"download-rd-sharma-class-10-solutions-chapter-7-exercise-72-free-pdf\"><\/span>Download RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 Free PDF<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div id=\"example1\" style=\"text-align: justify;\">\u00a0<\/div>\n<p style=\"text-align: justify;\"><style>\n.pdfobject-container { height: 800px;}<br \/>\n.pdfobject { border: 1px solid #666; }<br \/>\n<\/style><\/p>\n<p style=\"text-align: justify;\"><script src=\"https:\/\/www.kopykitab.com\/_utility\/js\/pdfobject.min.js\"><\/script><br \/><script>PDFObject.embed(\"https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2021\/09\/RD-Sharma-Solution-Class-10-Chapter-7-Exercise-7.2.pdf\", \"#example1\");<\/script><\/p>\n<p><a href=\"https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2021\/09\/RD-Sharma-Solution-Class-10-Chapter-7-Exercise-7.2.pdf\">RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2<\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"access-answers-to-rd-sharma-solutions-class-10-maths-chapter-7-exercise-72-important-question-with-answers\"><\/span>Access answers to RD Sharma Solutions Class 10 Maths Chapter 7 Exercise 7.2- Important Question with Answers<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Question 1.<br \/>The. number of telephone calls received at an exchange per interval for 250 successive one-minute intervals is given in the following frequency table:<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4816\/45696151412_35b500c6c3_o.png\" alt=\"RD Sharma Class 10 Chapter 7 Statistics \" width=\"674\" height=\"78\" \/><br \/>Compute the mean number of calls per interval.<br \/>Solution:<br \/>Let assumed mean (A) = 4<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4835\/45696151572_dccb2d07b2_o.png\" alt=\"RD Sharma Class 10 Chapter 7 Statistics \" width=\"633\" height=\"417\" \/><br \/>Hence the mean number of calls per interval = 3.54<\/p>\n<p>Question 2.<br \/>Five coins were simultaneously tossed 1000 times, and at each toss the number of heads was observed. The number of tosses during which 0, 1, 2, 3, 4, and 5 heads were obtained are shown in the table below. Find the mean number of heads per toss<br \/><img src=\"https:\/\/farm2.staticflickr.com\/1950\/45696151492_ff30af5832_o.png\" alt=\"Statistics Class 10 RD Sharma \" width=\"640\" height=\"84\" \/><br \/>Solution:<br \/>Let assumed means (A) = 3<br \/><img src=\"https:\/\/farm2.staticflickr.com\/1913\/45696151632_cbcff5cd49_o.png\" alt=\"RD Sharma Class 10 Solutions Statistics \" width=\"604\" height=\"357\" \/><br \/>Hence the mean number of tosses per head = 2.47<\/p>\n<p>Question 3.<br \/>The following table gives the number of branches and number of plants in the garden of a school.<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4814\/45696151692_ecdd4e6afa_o.png\" alt=\"RD Sharma Class 10 Solutions Chapter 7 Statistics \" width=\"458\" height=\"74\" \/><br \/>Calculate the average number of branches per plant.<br \/>Solution:<br \/>Let assumed mean (A) = 4<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4908\/31874703648_55dc230f25_o.png\" alt=\"RD Sharma Class 10 Pdf Chapter 7 Statistics \" width=\"599\" height=\"341\" \/><br \/>\u2234Mean number of branches per plant = 3.62<\/p>\n<p>Question 4.<br \/>The following table gives the number of children of 150 families in a village<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4860\/31874703678_09e1aa438b_o.png\" alt=\"RD Sharma Class 10 Solutions Chapter 7 Statistics \" width=\"520\" height=\"75\" \/><br \/>Find the average number of children per family.<br \/>Solution:<br \/>Let assumed mean (A) = 3<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4899\/45021402244_8c1e7d507c_o.png\" alt=\"RD Sharma Class 10 Pdf Chapter 7 Statistics \" width=\"601\" height=\"332\" \/><br \/>= 3 \u2013 0.65 = 2.35<br \/>Hence, the mean number of children per family = 2.35<\/p>\n<p>Question 5.<br \/>The marks obtained out of 50, by 102 students in a Physics test are given in the frequency table below:<br \/><img src=\"https:\/\/farm2.staticflickr.com\/1908\/45021402334_8633a881f3_o.png\" alt=\"RD Sharma Solutions Class 10 Chapter 7 Statistics \" width=\"724\" height=\"74\" \/><br \/>Find the average number of marks.<br \/>Solution:<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4851\/45021402424_8f74fcf5ce_o.png\" alt=\"Learncbse.In Class 10 Chapter 7 Statistics \" width=\"606\" height=\"472\" \/><\/p>\n<p>Question 6.<br \/>The number of students absent in a class was recorded every day for 120 days and the<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4829\/45021402474_4fdb48d12d_o.png\" alt=\"RD Sharma Solutions Class 10 Chapter 7 Statistics \" width=\"679\" height=\"84\" \/><br \/>Solution:<br \/>Let assumed mean = 3<br \/><img src=\"https:\/\/farm2.staticflickr.com\/1962\/45021402504_06828ce46b_o.png\" alt=\"Learncbse.In Class 10 Chapter 7 Statistics \" width=\"616\" height=\"409\" \/><br \/>= 3 + 0.525 = 3.525 = 3.53 (approx)<\/p>\n<p>Question 7.<br \/>In the first proofreading of a book containing 300 pages the following distribution of misprints was obtained:<br \/><img src=\"https:\/\/farm2.staticflickr.com\/1936\/31874704288_fb7f3c73d2_o.png\" alt=\"RD Sharma Class 10 Pdf Free Download Full Book Chapter 7 Statistics \" width=\"672\" height=\"80\" \/><br \/>Find the average number of misprints per page.<br \/>Solution:<br \/>Let assumed mean (A) = 2<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4825\/31874704338_894378c511_o.png\" alt=\"RD Sharma Class 10 Solution Chapter 7 Statistics \" width=\"600\" height=\"348\" \/><br \/>= 2 \u2013 127 = 0.73<br \/>\u2234 Average number of misprints per page = 0.73<\/p>\n<p>Question 8.<br \/>The following distribution gives the number of accidents met by 160 workers in a factory during a month.<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4897\/45021402574_ec1505b470_o.png\" alt=\"RD Sharma Class 10 Pdf Free Download Full Book Chapter 7 Statistics \" width=\"468\" height=\"76\" \/><br \/>Find the average number of accidents per worker.<br \/>Solution:<br \/>Let assumed mean = 2<br \/><img src=\"https:\/\/farm2.staticflickr.com\/1976\/45021402614_614c2a5ca6_o.png\" alt=\"RD Sharma Class 10 Solution Chapter 7 Statistics \" width=\"616\" height=\"307\" \/><br \/>= 2 \u2013 1.168 = 2 \u2013 1.17 = 0.83 (approx)<br \/>\u2234 Average number of accidents per worker = 0.83<\/p>\n<p>Question 9.<br \/>Find the mean from the following frequency distribution of marks at a test in statistics<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4910\/45021402634_1f9cc2af14_o.png\" alt=\"RD Sharma Class 10 Pdf Ebook Chapter 7 Statistics \" width=\"730\" height=\"80\" \/><br \/>Solution:<br \/>Let assumed mean = 25<br \/><img src=\"https:\/\/farm5.staticflickr.com\/4890\/45021402674_63cb0f171c_o.png\" alt=\"RD Sharma Class 10 Pdf Ebook Chapter 7 Statistics \" width=\"536\" height=\"511\" \/><br \/>\u2234Average of marks obtained per student = 22.075<\/p>\n<p>We have provided complete details of RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2. If you have any queries related to <a href=\"https:\/\/www.cbse.gov.in\/\" target=\"_blank\" rel=\"noopener\"><strong>CBSE<\/strong><\/a>\u00a0Class 10, feel free to ask us in the comment section below.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"faqs-on-rd-sharma-class-10-solutions-chapter-7-exercise-72\"><\/span>FAQs on RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1631268287331\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"where-can-i-get-rd-sharma-solutions-class-10-maths-chapter-7-exercise-72-free-pdf\"><\/span>Where can I get RD Sharma Solutions Class 10 Maths Chapter 7 Exercise 7.2 Free PDF?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>You can get RD Sharma for Class 10 Maths Solutions Chapter 7 Exercise 7.2 Free PDF from the above article.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1631268435580\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"what-are-the-benefits-of-using-rd-sharma-class-10-solutions-chapter-7-exercise-72\"><\/span>What are the benefits of using RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>1. Correct answers according to the latest CBSE guidelines and syllabus.<br \/>2. The RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 is written in simple language to assist students in their board examination, &amp; competitive examination preparation.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1631268574542\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"how-is-rd-sharma-class-10-solutions-chapter-7-exercise-72-helpful-for-board-exams\"><\/span>How is RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 helpful for board exams?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>For self-evaluation, RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 provides solutions with thorough descriptions per term limits specified by the Board. Students will gain valuable experience solving these problems, allowing them to complete the assignment on time.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2:\u00a0Students can use the RD Sharma Class 10 Solutions to get confidence in solving Class 10 Mathematics problems. Download RD Sharma Solutions for Class 10 Maths Chapter 7 Exercise 7.2, PDF, for any clarifications or explanations on this exercise. Download RD Sharma Class 10 Solutions Chapter 7 &#8230; <a title=\"RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 (Updated for 2023)\" class=\"read-more\" href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-class-10-solutions-chapter-7-exercise-7-2\/\" aria-label=\"More on RD Sharma Class 10 Solutions Chapter 7 Exercise 7.2 (Updated for 2023)\">Read more<\/a><\/p>\n","protected":false},"author":238,"featured_media":126499,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":""},"categories":[73411,2985,73410],"tags":[3243,9206,73520,4388],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/126488"}],"collection":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/users\/238"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/comments?post=126488"}],"version-history":[{"count":4,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/126488\/revisions"}],"predecessor-version":[{"id":501984,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/126488\/revisions\/501984"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/media\/126499"}],"wp:attachment":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/media?parent=126488"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/categories?post=126488"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/tags?post=126488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}