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Dual scaling for the analysis of categorical data
Michael D Maraun1, Kathleen Slaney, Jarkko Jalava
1Department of Psychology, Simon Fraser University, Canada. maraun@sfu.ca
Abstract:
Dual scaling is a set of related techniques for the analysis of a wide assortment of categorical data types including contingency tables and multiple-choice, rank order, and paired comparison data. When applied to a contingency table, dual scaling also goes by the name "correspondence analysis," and when applied to multiple-choice data in which there are more than 2 items, "optimal scaling" and "multiple correspondence analysis. " Our aim of this article was to explain in nontechnical terms what dual scaling offers to an analysis of contingency table and multiple-choice data.
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