Illustration 10.42. From the data given below about four sub- groups, calculate the average and the standard deviation of the whole group. No. of men Average wage Standard deviation wage Sub-group (Rs) ( Rs) 50 61.0 8 B 100 70.0 120 80.5 10 30 83.0 11 300

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Illustration 10.42. From the data given below about four sub-
groups, calculate the average and the standard deviation of the whele
group.
Sub-group
No. of men
Average wage
Standard
deviation wage
(Rs)
i Rs)
50
61.0
8
100
70.0
120
80.5
10
30
83.0
11
300
CS Scanned with CamScanner
Transcribed Image Text:Illustration 10.42. From the data given below about four sub- groups, calculate the average and the standard deviation of the whele group. Sub-group No. of men Average wage Standard deviation wage (Rs) i Rs) 50 61.0 8 100 70.0 120 80.5 10 30 83.0 11 300 CS Scanned with CamScanner
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