ERIC ED463308: Mutilating Data and Discarding Variance pdf

ERIC ED463308: Mutilating Data and Discarding Variance

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Description of the Book:

This paper reviews issues involved in converting continuous variables to nominal variables to be used in the OVA techniques. The literature dealing with the dangers of dichotomizing continuous variables is reviewed. First, the assumptions invoked by OVA analyses are reviewed in addition to concerns regarding the loss of variance and a reduction in score reliability that result from the conversion of continuous variables to nominal variables. Second, regression is discussed as a more adequate alternative to analysis of variance (ANOVA). Finally, a heuristic data set is presented and used as a demonstration of three alternatives that can occur through this conversion and when ANOVA is used. (Contains 6 figures and 20 references.) (Author/SLD

• Creator/s: ERIC
• Date: 2/14/2002
• Year: 2002
• Book Topics/Themes: ERIC Archive, Analysis of Variance, Heuristics, Regression (Statistics), Reliability, Kroff, Michael W

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