Present the data and calculate the percentage of the annual profit in thousands of rupees in 50 firms:(15)
28, 35, 61, 29, 36, 48, 57, 67, 69, 50, 48, 40, 47, 42, 41, 37, 51, 62, 63, 33, 31, 32, 35, 40, 38, 37, 60, 51, 54, 56, 37, 46, 43, 42, 38, 61, 59, 58, 44, 39, 57, 38, 44, 45, 47, 38, 44, 47, 47, 64.
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Class Interval
Frequency
10-20
20-30
30-40
40-50
50-60
60-70
10
12
7
7
8
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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