Question

Change the following distribution to a 'more than type' distribution. Hence draw the 'more than type' ogive for this distribution.

Class interval:	20−30	30−40	40−50	50−60	60−70	70−80	80−90
Frequency:	10	8	12	24	6	25	15

Answer 1

Class interval	Cumulative Frequency
More than 20	100
More than 30	90
More than 40	82
More than 50	70
More than 60	46
More than 70	40
More than 80	15