al dia
wined sample of 100 values.
6. An analysis of daily wages of casual labourers in two firms A and B, belonging to the
same industry, gives the following result:
Firm A
Firm B
50
60
No. of workers
Average daily wages (in 3)
S.D.
113
120
6.5
8.2
Find the mean and S.D. of wages of all casual labourers in the two firms taken together.
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Firm pays larger amount as wages is firm B b) Firm shows ... Number of Employees : 100 ... (c) Find combined average monthly wage and the standard deviation o
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