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Question
Two plants A and B of a factory show following results about the number of workers and the wages paid to them
| Plant A | Plant 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?
Solution
Variance of the distribution of wages in plant
Thus, the plant with greater value of SD will have more variability in salary.
Plant B has more variability in individual wages than plant A.
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