Question

6. The following table gives the information of
frequency distribution of weekly wages of 150
workers of a company. Find the mean of the
weekly wages by 'step deviation' method.
1000-2000
2000 - 3000
3000-4000
4000-5000
Weekly wages
(Rupees)
No. of workers
25
50
30​

Answer 1

This is the step deviation method