Question

The class mark of a frequency distribution are given as follows:16,20,24, The class corresponding to the class mark 16 is​

Answer 1

Answer:

Step-by-step explanation:

Class marks are: 15,20,25,...

Lower limit of class 20 is mean of 15 and 20= 2

15+20

=17.5

Upper limit of class 20 is the mean of 20 and 25= 2

20+25

=22.5

20 is the class mark for the class interval 17.5−22.5