Chapter 9, Problem 7E

Movie profits once more Look back at the regression in Exercise 3. Here is the partial regression plot for the coefficient of Budget.

1. a) What is the slope of the least squares regression line in the partial regression plot?
2. b) The point plotted with a red “x” is the movie Avatar, which had an extraordinarily large budget. If that movie were removed from the data, how would that affect the coefficient of Budget in the multiple regression?
   1. i. It would get larger (more positive).
   2. ii. It would get smaller.
   3. iii. It would become zero.
   4. iv. We can’t tell from this graph.