Question

Using assumed mean method, find out standard deviation of the following frequency
distribution:
Age (in years):
25 - 30 30 - 35 35-40 40-4545-50 50-55
No. of Labourers
70
51
47
31
29
22​

Answer 1

Answer:

,564 × 390

by according do the substance =(a-b)=2ab

the formula the√2:53/at of the

cost256/654={26}

=31