Consider the wear data in Exercise 12-7. (a) Find the value of R2 when the model uses
Question:
(a) Find the value of R2 when the model uses the regressors x1 and x2.
(b) What happens to the value of R2 when an interaction term x1x2 is added to the model? Does this necessarily imply that adding the interaction term is a good idea?
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a R 0985 b R 099 R incr...View the full answer
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Related Book For 
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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