Question

The following are the ages of 300 patients getting medical treatment in a hospital on a particular day:

Age(in years)	10-20	20-30	30-40	40-50	50-60	60-70
No. of patients	60	42	55	70	53	20

Form:(1) less than type cumulative frequency distribution

(2)more than type cumulative frequency distribution

Answer 1

The following are the ages of 300 patients getting medical treatment in a hospital on a particular day:

Age(in years)	10-20	20-30	30-40	40-50	50-60	60-70
No. of patients	60	42	55	70	53	20

Form:

(1) less than type cumulative frequency distribution

(2)more than type cumulative frequency distribution

Solution:

(1)

Age(in years)	less than or equal to 20	less than or equal to 30	less than or equal to 40	less than or equal to 50	less than or equal to 60	less than or equal to 70
Cumulative frequency	60	60+42=102	102+55=157	157+70=227	227+53=280	280+20=300

(2)

Age(in years)	more than or equal to 10	more than or equal to 20	more than or equal to 30	more than or equal to 40	more than or equal to 50	more than or equal to 60
Cumulative frequency	300	300-60=240	240-42=198	198-55=143	143-70=73	73-53=20