Eta,disco, odisco,andF |
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Authors: | Louis Guttman |
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Affiliation: | (1) The Hebrew University of Jerusalem, Israel;(2) The Israel Institute of Applied Social Research, Israel;(3) 2664 Lowell Road, 48103 Ann Arbor, MI |
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Abstract: | Two coefficients are proposed for measuring the extent of overlap in distributions as a direct function of the variance between the arithmetic means (“disco” and “odisco”). They are designed to answer such questions as: “Given the value of a numerical variablex, to which population should an individual be assigned so that minimum error would be incurred?” This is just the reverse of the question addressed by ANOVA. These coefficients are shown to be analytic inx and they are related to Pearson's eta and Fisher'sF. Extensions of these coefficients (designed for univariate, one-way discrimination) tok-way and multivariate discriminant analysis and measurement of “interaction” are suggested. |
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Keywords: | discriminant analysis discriminant coefficients F eta monotonicity coefficients consistent statistics cumulative science ANOVA size of effect interaction |
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