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 wages earners 586 648 Mean of monthly wages Rs. 5253 Rs. 5253 Variance of the distribution of wages 100 121
( i ) Which firm A or B pays to larger mount as monthly wages?
(ii) Which firm A or B shows greater variability in individual wages?

Answer

firm B has greater variability in the individual wages

Explanation

\begin{aligned}
&(i) Number of wage earner in firm A=586\\
&Mean of monthly wage of firm A=\operatorname{Rs} 5253\\
&Mean of monthly age of firm A=\frac{\text { Total amount paid }}{\text { No. of wage eamers in firm } A}\\
&5253=\frac{\text { Total amount paid }}{586}\\
&Total amount paid by Firm A=5253 \times 586\\
&Number of wage earner in firm B=648\\
&Mean of monthly wage of firm B = Rs5 5253\\
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