Question 9:

The following table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate.

Answer:

To find the class marks, the following relation is used.

Class size (h) for this data = 10

Taking 70 as assumed mean (a), d_i, u_i, and f_iu_i are calculated as follows.

From the table, we obtain

Therefore, mean literacy rate is 69.43%.

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