The following table gives the literacy rate ( in % ) of 25 cities. Find the median class and modal class.
 
Literacy rate 
(in percent) 
50-60 60-70 70-80 80-90
Number of cities 9 6 8 2

 is the ans median class 60-70 and modal class 50-60??

Dear student
Literacy rate Number of cities Cumulative frequency
50-60 9 9
60-70 6 15
70-80 8 23
80-90 2 25
We have,
N=25.So, N/2=12.5
The cumulative frequency just greater than N/2 is 15 and the corresponding class is 60-70.
So, 60-70 is the median class.

Here, the maximum frequency is 9 and the corresponding class is 50-60.
So, the modal class is 50-60.
Regards

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