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The following table gives the literacy r...

The following table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate. Literacy rate (in %): 45-55 55-65 65-75 75-85 85-95 Number of cities: 3 10 11 8 3

Text Solution

Verified by Experts

We can solve this question by step deviation method.
First we have to construct a table with given details as shown in video.
We know, `Mean(barX) = A+(sumf_iu_i)/(sumf_i)**h`
As per table in video,
`A=70,sumf_iu_i = -2,sumf_i = 35 and h = 10`
`Mean(barX) = 70+((-2)/35**10) = 486/7=69.429`
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