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A Comparison of Three Predictor Selection Techniques in Multiple Regression

Published online by Cambridge University Press:  01 January 2025

Robert L. McCornack
Robert L. McCornack*
Affiliation:
San Diego State College
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Abstract

Three methods for selecting a few predictors from the many available are described and compared with respect to shrinkage in cross-validation. From 2 to 6 predictors were selected from the 15 available in 100 samples ranging in size from 25 to 200. An iterative method was found to select predictors with slightly, but consistently, higher cross-validities than the popularly used stepwise method. A gradient method was found to equal the performance of the stepwise method only in the larger samples and for the largest predictor subsets.

Information

Type
Original Paper
Information
Psychometrika , Volume 35 , Issue 2 , June 1970 , pp. 257 - 271
Copyright
Copyright © 1970 The Psychometric Society

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