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Solution for The Marks Scored by 40 Students of Class Ix in Mathematics Are Given Below: 81, 55, 68, 79, 85, 43, 29, 68, 54, 73, 47, 35, 72, 64, 95, 44, 50, 77, 64, 35, 79, 52, 45, 54, 70, 83, 62 - CBSE Class 9 - Mathematics

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Question

The marks scored by 40 students of class IX in mathematics are given below:
81, 55, 68, 79, 85, 43, 29, 68, 54, 73, 47, 35, 72, 64, 95, 44, 50, 77, 64, 35, 79, 52, 45, 54, 70,
83, 62, 64, 72, 92, 84, 76, 63, 43, 54, 38, 73, 68, 52, 54.
Prepare a frequency distribution with class size of 10 marks.

Solution

Marks Tally marks Frequency
20-30 | 1
30-40 ||| 3
40-50 ||||| 5
50-60 ||||| ||| 8
60-70 ||||| ||| 8
70-80 ||||| |||| 9
80-90 |||| 4
90-100 || 2
    Total = 40
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APPEARS IN

 RD Sharma Solution for Mathematics for Class 9 by R D Sharma (2018-19 Session) (2018 to Current)
Chapter 22: Tabular Representation of Statistical Data
Ex.22.1 | Q: 15 | Page no. 17
Solution The Marks Scored by 40 Students of Class Ix in Mathematics Are Given Below: 81, 55, 68, 79, 85, 43, 29, 68, 54, 73, 47, 35, 72, 64, 95, 44, 50, 77, 64, 35, 79, 52, 45, 54, 70, 83, 62 Concept: Presentation of Data.
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