when should we use class mark , adjusted frequency can u pls tell me - Maths - Statistics

Question

when should we use class mark , adjusted frequency ? can u pls
tell me

Manmeet Singh · Accepted Answer

Adjusted Frequency: The class intervals which do not have uniform class size, the class size is non-uniform, we cannot use our conventional method to construct the histogram So, we use the concept of adjusted frequency for constructing histograms with non-uniform class size

Class mark:

when should we use class mark , adjusted frequency ? can u pls tell me