Question

The following distribution gives the number of accidents met by 160 workers in a factory during a month.

No. of accidents (x):	0	1	2	3	4
No. of workers (f):	70	52	34	3	1

Find the average number of accidents per worker.

Answer 1

Let the assume mean be.

We know that mean,

Now, we have .

Putting the values in the above formula, we get

Hence, the average number of accidents per worker is 0.83.