Carol is building a multiple regression model to predict college GPA from a set of predictors. There is theory suggesting that college GPA can be predicted by students' involvement in college when controlling for their prior achievement. Therefore, Carol first entered into the model a set of variables that measure prior achievement (e.g., high school GPA, SAT) , and then added a set of variables that measure collegial involvement. Which one of the following procedures is used?
A) Backward elimination
B) Forward selection
C) Stepwise selection
D) Hierarchical regression
Correct Answer:
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