{"id":5699,"date":"2023-02-19T05:59:57","date_gmt":"2023-02-19T00:29:57","guid":{"rendered":"https:\/\/apboardsolutions.com\/?p=5699"},"modified":"2023-03-30T10:41:58","modified_gmt":"2023-03-30T05:11:58","slug":"ap-board-9th-class-maths-solutions-chapter-9-intext-questions","status":"publish","type":"post","link":"https:\/\/apboardsolutions.com\/ap-board-9th-class-maths-solutions-chapter-9-intext-questions\/","title":{"rendered":"AP Board 9th Class Maths Solutions Chapter 9 Statistics InText Questions"},"content":{"rendered":"

AP State Syllabus\u00a0AP Board 9th Class Maths Solutions<\/a> Chapter 9 Statistics InText Questions and Answers.<\/p>\n

AP State Syllabus 9th Class Maths Solutions 9th Lesson Statistics InText Questions<\/h2>\n

\"AP<\/p>\n

Activity<\/strong><\/p>\n

Divide the students of your class into four groups. Allot each group the work of collecting one of the following kinds of data: [Page No. 195]
\nSolution:
\ni) Weights of all the students in your class
\nii) Number of siblings that each student have.
\niii) Day wise number of absentees in your class during last month.
\niv) The distance between the school and home of every student of your class.<\/p>\n

\"AP<\/p>\n

Do This<\/strong><\/p>\n

Which of the following are primary and secondary data ? (Page No. 195)
\ni) Collection of the data about enroll\u00acment of students in your school for a period from 2001 to 2010.
\nSolution:
\nSecondary data.<\/p>\n

ii) Height of students in your class re\u00accorded by physical education teacher.
\nSolution:
\nPrimary data.<\/p>\n

\"AP<\/p>\n

Activity<\/strong><\/p>\n

Make frequency distribution table of the initial letters of that denotes surnames of your classmates and answer the following questions.
\ni) Which initial letter occured mostly among your classmates?
\nii) How many students names start with’ the alphabat T?
\niii) Which letter occured least as an initial among your classmates? [Page No. 197]<\/p>\n

Think, Discuss anil Write<\/strong><\/p>\n

Question 1.
\nGive 3 situations, where mean, median and mode are separately appropriate and counted. [Page No. 202]
\nSolution:
\nMean :
\na) Rice required for a certain number of students for a given period.
\nb) To compare the marks of students of a class.
\nc) To calculate the daily income of a shop during a month.<\/p>\n

Median :
\na) To study the salaries of staff of an institution.
\nb) To compare heights of boys and girls.<\/p>\n

Mode :
\na) To find the size of the shoe with heighest sale.<\/p>\n

\"AP<\/strong><\/p>\n

Try These<\/strong><\/p>\n

Question 1.
\nFind the median of the scores 75, 21, 56, 36, 81, 05, 42. [Page No. 207]
\nSolution:
\nArranging the data in ascending order
\n05, 21, 36, 42, 56, 75, 81
\nNumber of terms in the data = 7 – odd
\n\u2234 \\(\\left(\\frac{n+1}{2}\\right)^{t h}\\) term = \\(\\frac{7+1}{2}=\\frac{8}{2}\\) = 4th term is the median = 42.<\/p>\n

Question 2.
\nMedian of a data arranged in ascending order 7, 10, 15, x, y, 27, 30 is 17 and when one more observation 50 is added to the data the median has become 18. Find x and y. [Page No. 207]
\nSolution:
\nThe given data in ascending order is 7, 10, 15, x, y, 27, 30
\nMedian = \\(\\left(\\frac{n+1}{2}\\right)^{t h}\\) term = \\(\\left(\\frac{7+1}{2}\\right)\\) = 4th term = x
\n\u2234 x = 17 by problem
\nWhen 50 is added, the data becomes 7, 10, 15, 17, y, 27, 30, 50
\nMedian = \\(\\frac{\\left(\\left(\\frac{n}{2}\\right)+\\left(\\frac{n}{2}+1\\right)\\right)}{2}\\) terms
\n18 = \\(\\frac{17+y}{2}\\) (by problem)
\n17 + y = 36
\ny = 36 – 17 = 19<\/p>\n

\"AP<\/p>\n

Question 3.
\nFind the median marks in the data.[Page No. 208]
\n\"AP
\nSolution:
\n\"AP
\nMedian = \\(\\left(\\frac{n+1}{2}\\right)^{t h}\\) term as N = 29 is odd
\n\u2234 \\(\\frac{29+1}{2}\\) = 15th term.
\n15th observation is 15. (from the table)<\/p>\n

Question 4.
\nIn finding the median, the given data must be in order ? Why ? [Page No. 208]
\nSolution:
\nIn finding the median, the observations must be in order. The data is to be arranged either in ascending\/descending order to divide the data into two equal groups.<\/p>\n

\"AP<\/strong><\/p>\n

Think and Discuss<\/strong><\/p>\n

Question 1.
\nClassify your classmates according to their heights and find the mode of it.
\n(Page No. 208)
\nSolution:
\nStudent to find the mode of the classmates according their heights.<\/p>\n

Question 2.
\nIf shopkeeper has to place an order for shoes, which number shoes should he order more ? [Page No. 208]
\nSolution:
\nNumber 7 as it has highest sales.<\/p>\n","protected":false},"excerpt":{"rendered":"

AP State Syllabus\u00a0AP Board 9th Class Maths Solutions Chapter 9 Statistics InText Questions and Answers. AP State Syllabus 9th Class Maths Solutions 9th Lesson Statistics InText Questions Activity Divide the students of your class into four groups. Allot each group the work of collecting one of the following kinds of data: [Page No. 195] Solution: … Read more<\/a><\/p>\n","protected":false},"author":4,"featured_media":36045,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[5],"tags":[],"jetpack_featured_media_url":"https:\/\/apboardsolutions.com\/wp-content\/uploads\/2023\/02\/Chapter-9-Statistics-InText-Questions.png","_links":{"self":[{"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/posts\/5699"}],"collection":[{"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/comments?post=5699"}],"version-history":[{"count":1,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/posts\/5699\/revisions"}],"predecessor-version":[{"id":34252,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/posts\/5699\/revisions\/34252"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/media\/36045"}],"wp:attachment":[{"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/media?parent=5699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/categories?post=5699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/apboardsolutions.com\/wp-json\/wp\/v2\/tags?post=5699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}