Two plants A and B of a factory show following results about the number of workers and the wages paid to them.
`{:(,A,B),("No. of workers",5000,6000),("Average monthly wages","Rs 2500","Rs 2500"),("Variance of distribution of wages",81,100):}`
In which plant, A or B is there greater variability in individual wages?

An analysis of monthly wages paid to workers in two firms A and B, belonging to the same industry, gives the following results: {:(,"Firm A","Firm B"),("No. of wage earners",586,648),("Mean of monthly wages","Rs 5253","Rs 5253"),("Variance of the distribution",100,121):} (i) Which firm A or B pays larger amount as monthly wages? (ii) Which firm, A or B, shows greater variability in individual wages?

A factory employs 100 workers of whom 60 in the first shift and 40 work in the second shift. The average wage of all the 100 workers is Rs. 38 If the average wage of 60 workers of the first shift is Rs. 40, then the average wage of the remaining 40 workers of the second shift is

From some financial statistics, it is found that the monthly average electricial charges was 2,460 and S.D. Rs. 120. The monthly average direct wages was Rs. 42,000 and S.D. Rs. 1,200. State which is the more variable with proper reasons.