Explanation:-
To find the median class of the given data, find the cumulative frequency by adding the frequency.
firstly , find the sum of frequencies denoted by ⅀f
Next, find ⅀f /2 and check the cumulative frequency which is nearest to or greater than this value.
The corresponding class are going to be the median class.
To find the median class:
First add total number of frequencies.
f = 7+ 9+ 13+ 21+ 12+ 15+ 4+ 12
f = 93
⅀f /2= 93/2
= 46.5
Final answer:
Hence, the correct option (A) i.e. 40-50.
