Use all of the home data given in Table 1.2 to do a regression of price on size. Plot the residuals vs. the predicted values and comment on the effect the higher priced homes have on the assumptions....

Use all of the home data given in Table 1.2 to do a regression of price on size. Plot the residuals vs. the predicted values and comment on the effect the higher priced homes have on the assumptions. Construct a Q-Q plot for the residuals.

Does the normality assumption appear to be satisfied with the entire data set? Does the cost per square foot change a lot? What might be the cause of this change?