1. Approximate the mean of the frequency distribution for the ages of the residents of a town.

Age Frequency

0-9 27

10-19 29

20-29 15

30-39 17

40-49 20

50-59 55

60-69 43

70-79 19

80-89 3

The approximate mean age is____ years.(Round to one decimal place as needed.)

2. Use the given minimum and maximum data entries, and the number of classes, to find the class width, the lower class limits, and the upper class limits.

minimum=18,

maximum=131,

8 classes

The class width is

enter your response here.

(Type a whole number.)

what is the correct lower class limits below.