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Activity Number: 481
Type: Contributed
Date/Time: Wednesday, August 9, 2006 : 2:00 PM to 3:50 PM
Sponsor: General Methodology
Abstract - #305433
Title: Examination of Structure Coefficient Interpretation in Descriptive Discriminant Analysis: the Three-Group Case
Author(s): Mercedes Schneider*+
Companies: Ball State University
Address: Department of Educational Psychology, Muncie, IN, 47306,
Keywords: discriminant analysis ; structure coefficient interpretation ; Monte Carlo simulation ; MANOVA post hoc tests
Abstract:

This simulation examined the usefulness of determining a structure coefficient (SC) value >= .3 as identifying a meaningful continuous variable in descriptive discriminant analysis (DDA) when DDA is used as a post hoc for a significant MANOVA. Unequal group sizes and inequality of variance were considered for the three-group case. Specifically, sample sizes included n = 10, 25, 50, 75, and 100, and unequal variance involved at least one half of the simulations violating a test for homogeneity of variance. General results indicated support for the rule that an SC value >= .3 identifies a continuous variable useful for group separation.

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