The following table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate.
Literacy rate (in %):45-5555-6565-7575-8585-95
Number of cities:3101183
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AcademicMathematicsNCERTClass 10

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%.

raja
Updated on 10-Oct-2022 13:25:41

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