An analysis of monthly wages paid to the workers of two jute mills $A$ and $B$ gives the following data:
Metric Mill-$A$ Mill-$B$ No. of workers $500$ $600$ Average daily wage (in rupees) $186$ $175$ Variance of distribution of wages $81$ $100$
Then:
| Metric | Mill-$A$ | Mill-$B$ |
| No. of workers | $500$ | $600$ |
| Average daily wage (in rupees) | $186$ | $175$ |
| Variance of distribution of wages | $81$ | $100$ |
Then:
- AWage bill of mill $A$ is twice that of mill $B$.
- BMills $A$ and $B$ both have same wage bills.
- CWage bill of mill $A$ is greater than that of mill $B$.
- DWage bill of mill $B$ is greater than that of mill $A$.
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Medium
View SolutionLet $y_1, y_2, y_3, \dots, y_n$ be $n$ observations. Let $w_i = l y_i + k$ for all $i = 1, 2, 3, \dots, n$,where $l$ and $k$ are constants. If the mean of $y_i$ is $48$ and their standard deviation is $12$,and the mean of $w_i$ is $55$ and their standard deviation is $15$,then the values of $l$ and $k$ are:
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