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
Number of patients	6	42	55	70	53	20

Form a ‘less than type’ cumulative frequency distribution.

Answer 1

A ‘less than type’ cumulative frequency distribution table is given below:

Age (in years)	Cumulative frequency (𝑐𝑓)
Less than 20	60
Less than 30	102
Less than 40	157
Less than 50	227
Less than 60	280
Less than 70	300