Question

The Internet Movie Database (www.imdb.com) monitors the gross revenues of all major motion pictures. The table below gives both the domestic (United States and Canada) and international gross revenues for a sample of 20 popular movies. The data are saved in the IMDB file.
a. Write a first-order model for international gross revenues y as a function of domestic gross revenues x.
b. Write a second-order model for international gross revenues y as a function of domestic gross revenues x.
c. Construct a scatterplot of these data. Which of the models appears to be a better choice for explaining variation in international gross revenues?
d. Fit the model of part b to the data and investigate its usefulness. Is there evidence of a curvilinear relationship between international and domestic gross revenues? Test, using α = .05.
e. On the basis of your analysis in part d, which of the two models better explains the variation in international gross revenues?


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  • CreatedMay 20, 2015
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