An analysis of monthly wages paid to workers intwo firms A and B, belonging to the same industry, gives the following results:

(i) Which firm A or B pays larger amount as monthly wages?
(ii) Which firm A or B shows greater variability in individual wages?

Explanation

(i) Total wages of firm A employees
`=5253xx586=Rs. 30,78,258`
Total wages of firm B employees
`=5253xx648=Rs. 34,03,944`
`:.` Firm B pays larger amount as monthly wages.
(ii) Coefficient of variation of wages of firm A
`=(sigma)/x xx100`
`=(sqrt(100))/5253xx100=0.19`
Coefficient of variation of wages of firm B
`=(sigma)/x xx 100`
`=(sqrt(121))/5253xx100=0.21`
`:.` Firm B shows greater variability in wages.