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Question

The marks obtained (out of 20) by 30 students of a class in a test are given below:
7, 10, 8, 16, 13, 14, 15, 11, 18, 11, 15, 10, 7, 14, 20, 19, 15, 16, 14, 20, 10, 11, 14, 17, 13, 12, 15, 14, 16, 17.
Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval in 3–8 (including 2 and excluding 8). From the frequency distribution table so obtained, draw a histogram.


Solution

Frequency distribution table
Marks Tally Marks Number of students
3-8 || 2
8-13 |||| ||| 8
13-18 |||| |||| |||| | 16
18-23 |||| 4
Total =   30


Mathematics
RS Aggarwal (2019, 2020)
All

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