Question

Consider the following distribution of daily wages of 40 workers of a factory and by using suitable method, find mean daily wages of the workers of this factory :

Daily wages (in Rs)	25-35	35-45	45-55	55-65	65-75
No. of workers	6	10	8	12	4

Answer 1

Arithmetic mean = \(\frac { { \Sigma f }_{ i }{ x }_{ i } }{ { \Sigma f }_{ i } }\) = \(\frac { 1980 }{ 40 }\) = 49.50

Thus, mean of daily wages = Rs 49.50