First, we prepare the cumulative frequency table for above data
We know that median class of a data is the class-interval corresponding to cumulative frequency just greater than
N = sum of all frequencies
As N = 25 therefore
Cumulative frequency just greater than 25 is 26 which lies corresponding to class 30-40
Hence, 30-40 is median class.
Rate this question :
A data has 25 obsRS Aggarwal - Mathematics