Using a calculator and the MINITAB program, answer questions 45–46 and 48–49 again, using the data for GM.

Questions 46

Compute the mean, variance, and coefficient of variation for Chrysler’s current ratio for the period 1969–1978 and the period 1979–1990. Compare these descriptive statistics to those you computed in question 45. Have any changes occurred over the two different time periods? If so, can you propose an explanation?

Question 45

Compute the mean, variance, and coefficient of variation for Chrysler’s current ratio.

Questions 49

Compute the mean, variance, and coefficient of variation for Chrysler’s inventory turnover for the period 1969–1978 and the period 1979–1990. Compare these descriptive statistics to those you computed in question 48. Have any changes occurred over the two different time periods? If so, can you propose an explanation?

Question 48

Compute the mean, variance, and coefficient of variation for Chrysler’s inventory turnover.