Consider the following frequency distribution.

Class	Frequency
10-19	9
20-29	15
30-39	16
40-49	8
50-59	2

Construct a cumulative frequency distribution and a cumulative relative frequency distribution.

Class	Cumulative Frequency	Cumulative Relative Frequency
less than or equal to 19
less than or equal to 29
less than or equal to 39
less than or equal to 49
less than or equal to 59