A data set with whole numbers has a low value of 20 and a hi

A data set with whole numbers has a low value of 20 and a high value of 119.

Find the class width (interval width) and the class limits for a frequency distribution with 5 classes.

Solution

range = 119-20 = 99

number of classes = 5

class width = 99/5

= 19.8

= 20

limits are:

20-40

40-60

60-80

80-100

100-120