{"id":72878,"date":"2021-02-08T13:36:26","date_gmt":"2021-02-08T08:06:26","guid":{"rendered":"https:\/\/www.kopykitab.com\/blog\/?p=72878"},"modified":"2021-02-18T13:51:18","modified_gmt":"2021-02-18T08:21:18","slug":"rd-sharma-chapter-23-class-9-maths-exercise-23-1-solutions","status":"publish","type":"post","link":"https:\/\/www.kopykitab.com\/blog\/rd-sharma-chapter-23-class-9-maths-exercise-23-1-solutions\/","title":{"rendered":"RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c"},"content":{"rendered":"\n<p>RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c is based on the Bar Graph and Reading &amp; Interpretation of Bar Graphs. It can be useful for the students practicing on their own. The graphs provided are handy in terms of conducting the analysis of time and distribution of frequency upon offering a transparent account and specific picture of the problems. Data presented in graphical form or statistical form is indeed easy to be understood and in terms of analyzing big data.<\/p>\n<p>Although, we have attached the RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c PDF in which students will get the varieties of questions and examples with the stepwise solution. All the mentioned in the PDF are prepared by our subject experts. While practicing to prepare for the exam, students will get to know the types of questions based on the Bar Graph and its interpretation.<\/p>\n<p><a href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-solutions-class-9-maths-chapter-23-graphical-representation-of-statistical-data\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Learn about RD Sharma Class 9 Chapter 23 (Graphical Representation of Statistical Data)<\/strong><\/a><\/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-69d9f4034e72f\" 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-69d9f4034e72f\"><\/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-chapter-23-class-9-maths-exercise-23-1-solutions\/#download-rd%e2%80%8c-%e2%80%8csharma%e2%80%8c-%e2%80%8cchapter%e2%80%8c-%e2%80%8c23-%e2%80%8cclass%e2%80%8c-%e2%80%8c9%e2%80%8c-%e2%80%8cmaths%e2%80%8c-exercise%e2%80%8c-%e2%80%8c231-%e2%80%8csolutions%e2%80%8c-pdf\" title=\"Download RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c PDF\">Download RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c PDF<\/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.kopykitab.com\/blog\/rd-sharma-chapter-23-class-9-maths-exercise-23-1-solutions\/#important-definitions-rd%e2%80%8c-%e2%80%8csharma%e2%80%8c-%e2%80%8cchapter%e2%80%8c-%e2%80%8c23-%e2%80%8cclass%e2%80%8c-%e2%80%8c9%e2%80%8c-%e2%80%8cmaths%e2%80%8c-exercise%e2%80%8c-%e2%80%8c231-%e2%80%8csolutions%e2%80%8c\" title=\"Important Definitions RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c\">Important Definitions RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-chapter-23-class-9-maths-exercise-23-1-solutions\/#bar-graph\" title=\"Bar Graph\">Bar Graph<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-chapter-23-class-9-maths-exercise-23-1-solutions\/#reading-and-interpretation-of-bar-graphs\" title=\"Reading and interpretation of bar graphs\">Reading and interpretation of bar graphs<\/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-chapter-23-class-9-maths-exercise-23-1-solutions\/#examples-of-rd%e2%80%8c-%e2%80%8csharma%e2%80%8c-%e2%80%8cchapter%e2%80%8c-%e2%80%8c23-%e2%80%8cclass%e2%80%8c-%e2%80%8c9%e2%80%8c-%e2%80%8cmaths%e2%80%8c-exercise%e2%80%8c-%e2%80%8c231-%e2%80%8csolutions%e2%80%8c\" title=\"Examples of RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c\">Examples of RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"download-rd%e2%80%8c-%e2%80%8csharma%e2%80%8c-%e2%80%8cchapter%e2%80%8c-%e2%80%8c23-%e2%80%8cclass%e2%80%8c-%e2%80%8c9%e2%80%8c-%e2%80%8cmaths%e2%80%8c-exercise%e2%80%8c-%e2%80%8c231-%e2%80%8csolutions%e2%80%8c-pdf\"><\/span>Download RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c 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: 500px;}<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\/02\/Solutions-for-Class-9-Maths-Chapter-23-Graphical-Representation-of-Statistical-Data-Exercise-23.1.pdf\", \"#example1\");<\/script><\/p>\n<p><a href=\"https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2021\/02\/Solutions-for-Class-9-Maths-Chapter-23-Graphical-Representation-of-Statistical-Data-Exercise-23.1.pdf\">Solutions for Class 9 Maths Chapter 23 Graphical Representation of Statistical Data Exercise 23.1<\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"important-definitions-rd%e2%80%8c-%e2%80%8csharma%e2%80%8c-%e2%80%8cchapter%e2%80%8c-%e2%80%8c23-%e2%80%8cclass%e2%80%8c-%e2%80%8c9%e2%80%8c-%e2%80%8cmaths%e2%80%8c-exercise%e2%80%8c-%e2%80%8c231-%e2%80%8csolutions%e2%80%8c\"><\/span>Important Definitions RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>As we have mentioned above that this exercise is based on the Graphical Representation of Statistical Data. Go down and check the definition and examples of the same.<\/p>\n<ul>\n<li>Bar Graph<\/li>\n<li>Reading and Interpretation of Bar Graphs<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"bar-graph\"><\/span>Bar Graph<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A bar graph is a graph categorically representing data through bars in rectangular form, where the length and width remain in proportion with the value represented by them. Here the bars can be either horizontally or vertically.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"reading-and-interpretation-of-bar-graphs\"><\/span>Reading and interpretation of bar graphs<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Reading and understanding graphs are about analyzing the data where the volumes do correspond to the specific categories.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"examples-of-rd%e2%80%8c-%e2%80%8csharma%e2%80%8c-%e2%80%8cchapter%e2%80%8c-%e2%80%8c23-%e2%80%8cclass%e2%80%8c-%e2%80%8c9%e2%80%8c-%e2%80%8cmaths%e2%80%8c-exercise%e2%80%8c-%e2%80%8c231-%e2%80%8csolutions%e2%80%8c\"><\/span>Examples of RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Ques: Study the bar graph depicting the no. of persons in various age groups in a town given in the figure. Observe the bar graph and answer the below questions-<\/strong><\/p>\n<p><img class=\"alignnone size-full wp-image-72879\" src=\"https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2021\/02\/23.1.png\" alt=\"RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c\" width=\"375\" height=\"455\" \/><\/p>\n<p>(a) Find the percentage of the youngest age-group persons over those in the oldest age group?<\/p>\n<p>(b) What is the complete population of the city?<\/p>\n<p>(c) What is the no. of persons in the age-group of 60-65?<\/p>\n<p>(d) How many persons are extra in the age-group of 10-15 than in the age group 30-35?<\/p>\n<p>(e) What is the age-group of specifically 1200 persons residing in the city?<\/p>\n<p>(f) What is the total no. of persons residing in the city in the age-group 50-55?<\/p>\n<p>(g) What is the total no. of persons residing in the city in the age-groups 10-15 and 60-65?<\/p>\n<p>(h) Whether the population, in general, is increasing, decreasing, or remains constant with the increase in the age-group.<\/p>\n<p><strong>Solution:<\/strong><\/p>\n<p><strong>(a)<\/strong> Youngest age-group is 10-15 years<\/p>\n<p>The no. of persons belonging to this group is 1400<\/p>\n<p>The oldest age-group is 70-75 years and<\/p>\n<p>The no. of persons belonging to this group is 300<\/p>\n<p>Now,<\/p>\n<p>The percentage of youngest age-group persons over those in the oldest group are mentioned below-<\/p>\n<p>1400 \/ 300\u00d7 100 = 1400\/ 3<\/p>\n<p><strong>(b)<\/strong> Population of the city = 300 + 800 + 900 + 1000 + 1100 + 1200 + 1400 = 6700<\/p>\n<p><strong>(c)<\/strong> No. of persons in the age group of 60 \u2013 65 = 800.<\/p>\n<p><strong>(d)<\/strong> No. of persons in the age group of 10 \u2013 15 = 1400<\/p>\n<p>The number of persons in the age group of 30-35 = 1100.<\/p>\n<p>Hence the no. of more persons in the age group 10 \u2013 15 than the group 30-35 is 1400 \u2014 1100 = 300.<\/p>\n<p><strong>(e)<\/strong> Age group of 1200 persons residing in the city = 20 \u2013 25.<\/p>\n<p><strong>(f)<\/strong> Total no. of persons living in the town in the age-group 50 \u2013 55 is 900.<\/p>\n<p><strong>(g)<\/strong> Total no. of persons living in the town in the age-groups 10 -15 and 60 \u2013 65 is 1400 +800 = 2200.<\/p>\n<p><strong>(h)<\/strong> We have noticed that the height of the bars decreases as the age-group increases. Hence, the population diminishes with the increases in the age-group.<\/p>\n<p><a href=\"https:\/\/www.cbse.gov.in\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Know about CBSE Board<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c is based on the Bar Graph and Reading &amp; Interpretation of Bar Graphs. It can be useful for the students practicing on their own. The graphs provided are handy in terms of conducting the analysis of time and distribution of frequency upon offering a transparent &#8230; <a title=\"RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c\" class=\"read-more\" href=\"https:\/\/www.kopykitab.com\/blog\/rd-sharma-chapter-23-class-9-maths-exercise-23-1-solutions\/\" aria-label=\"More on RD\u200c \u200cSharma\u200c \u200cChapter\u200c \u200c23 \u200cClass\u200c \u200c9\u200c \u200cMaths\u200c Exercise\u200c \u200c23.1 \u200cSolutions\u200c\">Read more<\/a><\/p>\n","protected":false},"author":241,"featured_media":72880,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":""},"categories":[2985,2917,73719,73411,73410],"tags":[3081,3086,3085],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/72878"}],"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\/241"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/comments?post=72878"}],"version-history":[{"count":3,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/72878\/revisions"}],"predecessor-version":[{"id":73981,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/72878\/revisions\/73981"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/media\/72880"}],"wp:attachment":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/media?parent=72878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/categories?post=72878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/tags?post=72878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}