In Exercises 29 and 30, you analyzed the tuitions, the pre-MBA salaries, and the post-MBA salaries of the classes of 2006 and 2008, respectively, of the business schools with the best returns on investment. Boxplots comparing these observations (in thousands of dollars) for the two classes are shown in Fig. 117.
Fig. 117

a. In comparing the class of 2006 to the class of 2008, describe any changes in the median tuition, median pre-MBA salary, and median post-MBA salary.
b. In part (e) of both Exercises 29 and 30, you estimated the students€™ break-even points for the classes of 2006 and 2008, respectively. Refer to part (a) to help explain why the break-even point was larger for the class of 2008 than for the class of 2006.

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Tuitions Class of 2008 Class of 2006 20 40 60 80 100 120 140 160 Thousands of dollars Pre-MBA Salaries Class of 2008 Class of 2006 20 30 40 50 60 70 80 Thousands of dollars Post-MBA Salaries Class of 2008 Class of 2006 100 200 Thousands of dollars 50 150 250