Non-symmetric Correspondence Analysis and Biplot
نویسندگان
چکیده
In this paper Non-Symmetric Correspondence Analysis (NSCA, Lauro & D'Ambra, 1984; D'Ambra & Lauro, 1989, 1992) is proposed as an useful technique for evaluating contingency table with a dependence structure, in particular within the context of comparing market share di erences. Technical aspects of the method are discussed with a view towards application, giving special attention to the biplot representation of NSCA as compared to the symmetric graphical display. Two examples dealing with canned food and the car market, respectively, are used to illustrate the usefulness of the technique and its kind of representation.
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