Using the information given in the adjoining histogram, calculate… - Vidyadip

Question

Using the information given in the adjoining histogram, calculate the mean.

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Answer

C.I	Frequency	Mid value x	Fx
15-25	10-Jan	20	200
25-35	20	30	600
35-45	25	40	1000
45-55	15	50	750
55-65	5	60	300
Total	75		2850

$\bar{x}=\frac{\sum f_x}{\sum f}=\frac{2850}{75}=38$

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