Question: Use the data in Table 11.6 on page 707. You should perform the least-squares regression requested in Exercise 18 in Sec. 11.2 before starting this

Use the data in Table 11.6 on page 707. You should perform the least-squares regression requested in Exercise 18 in Sec. 11.2 before starting this exercise.
a. Plot the residuals from the least-squares regression against the 1970 price. Do you see a pattern?
b. Transform both prices to their natural logarithms and repeat the least-squares regression. Now plot the residuals against logarithm of 1970 price. Does this plot look any better than the one in part (a)?

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