Question

Following are the ages (in years) of 360 patients, getting medical treatment in a hospital:

Age (in years)	Number of patients
10-20	90
20-30	50
30-40	60
40-50	80
50-60	50
60-70	30

Construct the cumulative frequency table for the above data.

Answer 1

Age (in years)	Number of patients	Cumulative frequency
10-20	90	90
20-30	50	140
30-40	60	200
40-50	80	280
50-60	50	330
60-70	30	360

Answer 2

Age (in years)	No. of students	Age (in years)	Cumulative frequency
10-20	90	Less than 20	90
20-30	50	Less than 30	140
30-40	60	Less than 40	200
40-50	80	Less than 50	280
50-60	50	Less than 60	330
60-70	30	Less than 70	360
	N = 360