Exercise 5 gave the following data on weekly gross revenue, television advertising, and newspaper advertising for Showtime
Question:
a. Find an estimated regression equation relating weekly gross revenue to television and newspaper advertising.
b. Plot the standardized residuals against y-bar. Does the residual plot support the assumptions about ε? Explain.
c. Check for any outliers in these data. What are your conclusions?
d. Are there any influential observations? Explain.
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Related Book For
Statistics For Business And Economics
ISBN: 9780538481649
11th Edition
Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
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