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SPSS Discriminant Function Analysis

SPSS Discriminant Function Analysis By Hui Bian Office for Faculty Excellence Discriminant Function Analysis What is Discriminant Function Analysis It builds a predictive model for group membership The model is composed of a Discriminant Function based on linear combinations of predictor variables. Those predictor variables provide the best discrimination between groups. 2 Discriminant Function Analysis Purpose of Discriminant Analysis to maximally separate the groups. to determine the most parsimonious way to separate groups to discard variables which are little related to group distinctions 3 Discriminant Function Analysis Summary: we are interested in the relationship between a group of independent variables and one categorical variable.

Discriminant Function Analysis Discriminant function A latent variable of a linear combination of independent variables One discriminant function for 2-group discriminant analysis For higher order discriminant analysis, the number of discriminant function is equal to g-1 (g is the number of categories of dependent/grouping variable).

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