Question

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

Answer 1

We know that

`"Mean "=(sumf_ix_i)/(sumf_i)`

`"The value of "sumf_ix_i" and "sumf_i" can be calculated as follows."`

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

`"Mean salary "=305000/60=5083.33`

Therefore, mean salary of 60 workers is Rs 5083.33.