Question

Construct a cumulative frequency distribution table for the following:

Marks	0 - 10	10 - 20	20 - 30	30 - 40	40 - 50	50 - 60	60 - 70
No. of students	8	12	16	24	36	15	9

Answer 1

Marks	No. of students (Frequency)	Cumulative Frequency
0 - 10	8	8
10 - 20	12	8 + 12 = 20
20 - 30	16	20 + 16 = 36
30 - 40	24	36 + 24 = 60
40 - 50	36	60 + 36 = 96
50 - 60	15	96 + 15 = 111
60 - 70	9	111 + 9 = 120
	N = 120