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# 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 |

Given:

To literacy rate (in percentage) of 35 cities.

To do:

We have to find the mean literacy rate.

Solution:

Let the assumed mean be $A=70$.

Mean $=A+\frac{\sum{f_id_i}}{\sum{f_i}}$

Therefore,

Mean $=70+(\frac{-20}{35})$

$=70-0.57$

$=69.43$

The mean literacy rate is 69.43%.

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