Question

Construct a frequency table from the following data:

Marks	No. of students
less than 10	6
less than 20	15
less than 30	30
less than 40	39
less than 50	53
less than 60	70

Answer 1

The frequency table is

Marks	No. of students	C. I	f
less than 10	6	0 - 10	6
less than 20	15	10 - 20	9
less than 30	30	20 - 30	15
less than 40	39	30 - 40	9
less than 50	53	40 - 50	14
less than 60	70	50 - 60	17