The following frequency polygon represents the number of hours each week a random sample of adult Americans exercises.

(a) What is the class width? How many classes are represented in the graph?
(b) What is the midpoint of the first class? What are the lower and upper limits of the first class?
(c) What is the midpoint of the last class? What are the lower and upper limits of the last class?
(d) What is the most popular number of hours spent exercising each week?
(e) What is the least popular number of hours spent exercising each week?
(f) Which range of hours had 55 people exercise each week?

Transcribed Image Text:

How Many Hours Do You Exercise Each Week? 80 70 60 50 40 30 20 10 -2 6. 10 14 18 22 26 Number of Hours Frequency 2.