Part I - Measures of Central tendency/Relative Frequency/ the Five-number Summary

A random sample of 25 Berkeley College students was asked, "How many hours per week

typically do you work outside the home?" Their responses were as follows:

{0, 0, 15, 20, 30, 40, 30, 20, 35, 35, 28, 15, 20, 25, 25, 30, 5, 10, 30, 24, 28, 30, 35, 15, 15}

a. Find the mean, the median and the mode of hours worked outside the home for the

sample data. Show all your work to justify your answer.

b. Use the above data to complete the following table summarizing the number of hours

worked outside the home. Express the relative frequency as a percent.

Class

Tally

Frequency

Relative Frequency

(0 -10)

(11-20)

(21 - 30)

(31- 40)

Total

c. Find the five-number summary of the hours worked outside of the home by the 25

Berkeley College students.