The student from Exercise 9.14 analyzed return-on-investment (ROI) for movies based on release year and genre of movies. The plots below show the predicted ROI vs. actual ROI for each of the genres separately. Do these figures support the comment in the FiveThirtyEight.com article that states, "The return-on-investment potential for horror movies is absurd." Note that the x-axis range varies for each plot.

Data from Exercise 9.14

A FiveThirtyEight.com article reports that "Horror movies get nowhere near as much draw at the box office as the big-time summer blockbusters or action/adventure movies ... but there's a huge incentive for studios to continue pushing them out. The return-on-investment potential for horror movies is absurd." To investigate how the return-on-investment compares between genres and how this relationship has changed over time, an introductory statistics student fit a model predicting the ratio of gross revenue of movies from genre and release year for 1,070 movies released between 2000 and 2018. Using the plots given below, determine if this regression model is appropriate for these data.

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Predicted ROI 10.0 7.5 5.0 2.5 CO 0 10.0 7.5 5.0 2.5 0 Action 5 10 Drama 20 • ● 40 Adventure 0 15 0 5 10 15 0 10 20 30 40 Horror 25 50 75 Actual ROI Comedy 100