Find the mean salary of 60 workers of a factory from the following table;

Salary (in Rs.)
Number of workers
3000
16
4000
12
5000
10
6000
8
7000
6
8000
4
9000
3
10000
1
Total
60

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5083.33

5085

5087

5080

answer is A.

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Detailed Solution

Concept- We start solving the problem by recalling the definition of the weighted average as the ratio of the weighted sum of the observations to the sum of the weights. Using this definition, use the formula for average salary as Question Image

Then replace salary with no. Enter the workers into the formula and perform the necessary calculations to get the desired result.
Mean

Or
Mean

Mean

Hence, the correct option is 1.

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