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A Heuristic Method for Estimating the Relative Weight of Predictor Variables in Multiple Regression

Johnson, Jeff W.·2000·Multivariate Behavioral Research
DOI 10.1207/s15327906mbr3501_1
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Abstract

The relative weight of predictor variables in multiple regression is difficult to determine because of non-zero predictor intercorrelations. Relative weight (also called relative importance by some researchers) is defined here as the proportionate contribution each predictor makes to R2, considering both its unique contribution and its contribution when combined with other variables. Although there are no unambiguous measures of relative weight when variables are correlated, some measures have been shown to provide meaningful results (Budescu, 1993; Lindeman, Merenda, & Gold, 1980). These measures are very difficult to implement, however, when the number of predictors is greater than about five. A method is proposed that is computationally efficient with any number of predictors, and is shown to produce results that are very similar to those produced by more complex methods. Recommendations are made for when this procedure may be applied and in what situations it is not appropriate.

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Metadata

Authors
Johnson, J. W.
Venue
Multivariate Behavioral Research
Publisher
Informa UK Limited
Published
2000-01
Volume
35
Issue
1
Pages
1-19
ISSN
  • 0027-3171 (ISSN-L)
  • 1532-7906
DOI
10.1207/s15327906mbr3501_1
OpenAlex
W2115218557
Cited by
1,135
References
0
FWCI
5.25
Type
journal article
Language
en
Open access
closed

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