Q.No.3. Following is given the frequency distribution of 280 workers of a factory according to their weekly income (in dollar): (4) Weekly income (S) 5065 65-80 80-95 95-110 110-125 125-140 140-155 155-1170 No. Of workers 16 39 86 60 40 22 Calculate the Mean absolute deviation, standard deviation, variance and coefficient of variation.

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Q.No.3. Following is given the frequency distribution of 280 workers of a factory according to
their weekly income (in dollar):
(4)
Weekly
income ($)
50-65
65-80
80-95
95-110
110-125
125-140
140-155
155-1170
No. Of
workers
16
39
86
60
40
22
Calculate the Mean absolute deviation, standard deviation, variance and
coefficient of variation.
Transcribed Image Text:Q.No.3. Following is given the frequency distribution of 280 workers of a factory according to their weekly income (in dollar): (4) Weekly income ($) 50-65 65-80 80-95 95-110 110-125 125-140 140-155 155-1170 No. Of workers 16 39 86 60 40 22 Calculate the Mean absolute deviation, standard deviation, variance and coefficient of variation.
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