Q29 of 69 Page 6

The following table gives the distribution of expenditure of different families on education. Find the mean expenditure on education of a family:

Here, the xi’s are large. Now, we apply the step deviation method with a = 3250 and h = 500



Now,



⇒x̄ = 3250 – 587.5


⇒x̄ = 2662.5


Hence, the mean expenditure on education of a family is Rs 2662.5


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