For the same regression as in Exercise 9, the Cook’s Distance values look like this:

The Cook’s D value for Star Wars III is 0.36.

a) If Star Wars III were removed from the data and the regression repeated, would you expect a large change in the regression coefficients?

b) Do you think Star Wars III should be included in this model if the plan is to use it to understand how these predictors affect movie revenue?

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100 100 50 0.00 0.10 0.20 0.30 Cook