Construct a continuous series with the help of the data given below 36, 22, 44, 43, 21, 32, 33, 35, 23, 25, 26, 28, 40, 42,
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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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