Question

Consider the following distribution of daily wages of $50$ workers of a factory.

Daily wages (in Rs)	$100-120$	$120-140$	$140-160$	$160-180$	$180-200$
Number of workers	$12$	$14$	$8$	$6$	$10$

Find the mean daily wages of the workers of the factory by using an appropriate method.

Answer 1

Daily wages	No.of workers (f )	x	xf
100-120	12	110	1320
120-140	14	130	1820
140-160	8	150	1200
160-180	6	170	1020
180-200	10	190	1900
	50		7260

mean $=\overline{x}=\frac{\sum xf}{\sum f}=\frac{7260}{50}=145.2$

So, the mean daily ways of the workers

are $\mathrm{145.2.}$ [Ans]