Following are the age and price data for Corvettes from Exercises 4.51 and 4.89.

a. Obtain the linear correlation coefficient.
b. Interpret the value of r in terms of the linear relationship between the two variables in question.
c. Discuss the graphical interpretation of the value of r and verify that it is consistent with the graph you obtained in the corresponding exercise in Section 4.2.
d. Square r and compare the result with the value of the coefficient of determination you obtained in the corresponding exercise in Section 4.3.

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