Question

Prepare a cumulative frequency distribution table of the marks scored by 60 students in a test are given below:

Marks	No. of students
0 - 10	4
10  20	15
20 - 30	21
30 - 40	12
40  50	8

Answer 1

Marks	No. of students	Cum. frequency
0 - 10	4	4
10 - 20	15	19
20 - 30	21	40
30 - 40	12	52
40 - 50	8	60