31. Draw a frequency distribution table of the following data using intervals:
40 - 45, 45-50, and so on.
41, 56, 42, 53, 52, 50, 41, 56, 60, 62, 64, 43, 52, 48, 49,
47, 59, 54, 55, 44, 60, 62, 61, 52, 51, 57, 59, 54, 48, 63.
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Answer:
Class Interval frequency
10-20 10
20-30 12
30-40 7
40-50 7
50-60 8
60-70 3
(i) For Cumulative Frequency 30−40 frequency is 7
(ii) Size is 11
Mid point for cumulative frequency 30−40 is 35.
(iii) Range =70−10=60
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