There is one movie that has a much larger total U.S. box office revenue than predicted. Which is it, and how much more revenue did it obtain compared with that predicted?
Remove this movie and redo the multiple regression. Make a table giving the regression coefficients and their standard errors, statistics, and -values.
Compare these results with those presented in Example 11.13 (pages 552–553). How does the removal of this outlying movie affect the estimated model?
Obtain the residuals from this reduced data set and graphically examine their distribution. Do the residuals appear approximately Normal? Is there constant variance? Explain your answer.