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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 6
10000 1
Total 60

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Best answer

We know that

Salary (in Rs) (xi) Number of workers (fi) fixi
3000 16 3000 x 16 = 48000
4000 12 4000 x 12 = 48000
5000 10 5000 x 10 = 50000
6000 8 6000 x 8 = 48000
7000 6 7000 x 6 = 42000
8000 4 8000 x 4 = 32000
9000 3 9000 x 3 = 27000
10000 1 10000 x 1= 10000
Total  fi = 60  fixi = 305000

Mean salary = 305000/60

= 5083.33

Therefore, mean salary of 60 workers is Rs 5083.33.

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