Develop a table of row percentages for the contingency table you set up in Exercise 2.71. Using these row percentages, construct a percentage frequency distribution of overall mechanical quality rating for each of the United States, the Pacific Rim, and Europe. Illustrate these three frequency distributions using percent bar charts and compare the distributions in a written report.

(Data from Exercise 2.71)

Construct a contingency table of automobile origin versus overall mechanical quality rating. Set up rows corresponding to the United States, the Pacific Rim (Japan/Korea), and Europe (Germany/Great Britain/Sweden), and set up columns corresponding to the ratings “among the best” through “the rest.” Describe any apparent relationship between origin and overall mechanical quality rating.