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Kiran Chaudhary
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Asked: 2020-11-04T09:58:53+00:00 In:

In a mathematics test given to 15 students, the following marks (out of 100) are recorded: 41, 39, 48, 52, 46, 62, 54, 40, 96, 52, 98, 40, 42, 52, 60 Find the mean, median and mode of this data.

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NCERT Solutions for Class 9 Maths Chapter 13
Important NCERT Questions
Statistics
NCERT Books for Session 2022-2023
CBSE Board, UP Board and Other state Boards
EXERCISE 14.4
Page No:269
Questions No:2

2020-2021cbsechapter 14class 9mathematicsncertstatistics
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    1. Best Answer

      Mean = Sum of all observation/Total number of observations
      = 41 + 39 + 48 + 52 + 46 + 62 + 54 + 40 + 96 + 52 + 98 + 40 + 42 + 52 + 60/15
      = 822/10 = 54.8
      Arranging the data in ascending order:
      39, 40, 40, 41, 42, 46, 48, 52, 52, 54, 60, 62, 96, 98
      Number of observations = 15
      15 is an odd number. Therefore, the mode = 8th[(n+1/2)th] term of the observation.
      Hence,
      Median = 8th term = 52
      Mode is the observation having maximum frequency. Here, the number 52 occurs maximum (3) times.
      Hence, the mode of the observations is 52.

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    2. Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
      Please follow the link to visit website for first and second term exams solutions.
      https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-13/

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