Heres a scatterplot of the residuals against predicted values for the regression model found in Exercise. a)
Question:
a) The two extraordinary points in the lower right are Reggios and Michelinas, two gourmet brands. Interpret these points.
b) Do you think these two pizzas are likely to be influential in the regression. Would setting them aside be likely to change the coefficients? What other statistics might help you decide?
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Related Book For
Business Statistics
ISBN: 9780321925831
3rd Edition
Authors: Norean Sharpe, Richard Veaux, Paul Velleman
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