Mean Centering in Moderated Multiple Regression : Much A Do About Nothing  

Oleh:

Kromrey, Jeffrey D. ; Johnson, Lynn-Foster

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Educational and Psychological Measurement vol. 58 no. 1 (1998), page 42-67.
Topik: REGRESSION; test methods; educational evaluation
Fulltext: 42.pdf (2.04MB)

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Perpustakaan Pusat (Semanggi) Nomor Panggil: EE30.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Centering variables prior to the analysis of moderate multiple regression equations has been advocated for reasons both statistical (reduction of multi collinearity) and substantive (improved interpretation of the resutling regression equations). This article provides a comparison of centered and raw score analyses in least squares regression. The two methods are demonstrated to be equivalent, yielding identical hypothesis tests associated with the moderation effect and regression equations that are functionally equivalent.

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