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A simple way to deal with multicollinearity

Gikuang Jeff Chen

Journal of Applied Statistics, 2012, vol. 39, issue 9, 1893-1909

Abstract: Despite the long and frustrating history of struggling with the wrong signs or other types of implausible estimates under multicollinearity, it turns out that the problem can be solved in a surprisingly easy way. This paper presents a simple approach that ensures both statistically sound and theoretically consistent estimates under multicollinearity. The approach is simple in the sense that it requires nothing but basic statistical methods plus a piece of a priori knowledge. In addition, the approach is robust even to the extreme case when the a priori knowledge is wrong. A simulation test shows astonishingly superior performance of the method in repeated samples comparing to the OLS, the Ridge Regression and the Dropping-Variable approach.

Date: 2012
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Citations: View citations in EconPapers (5)

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DOI: 10.1080/02664763.2012.690857

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