2.42 [EX02-042] The USA Snapshot titled “Nuns an aging order” reports that the median age of the 94,022 Roman Catholic nuns in the United States is 65 years and the percentages of U.S. nuns by age group are as follows:

Under 50 51–70 Over 70 Refused to give age 16% 42% 37% 5%

This information is based on a survey of 1049 Roman Catholic nuns. Suppose the survey had resulted in the following frequency distribution (52 ages unknown):

Age 20–30 30–40 40–50 50–60 60–70 70–80 80–90 Frequency 34 58 76 187 254 241 147

a. Draw and completely label a frequency histogram.

b. Draw and completely label a relative frequency histogram of the same distribution.

c. Carefully examine the two histograms in parts a and b and explain why one of them might be easier to understand. (Retain these solutions to use in Exercise 2.166, p. 123.)

FYI Use the computer or calculator commands on pages 61–63 to construct a histogram of a frequency distribution.