3. The weights (in kg) of 40 employees of a company are given below: 30, 45, 60, 43, 33, 47, 50, 51, 52, 32, 75, 68, 37, 84, 39, 68, 74, 83, 84, 85, 92, 98, 63, 42, 45, 59, 68, 63, 78, 75, 63, 68, 69, 75, 35, 64, 68, 73, 84, 86. Prepare a grouped frequency distribution table by taking a suitable class-interval and answer the following questions:
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Answer:
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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Step-by-step explanation:
30 -39 = 6
40-49=5
50-59=4
60-69=11
70-79=6
80-89=6
90-99=2
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