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Chapter 440 Discriminant Analysis - NCSS

NCSS Statistical Software 440-1 NCSS, LLC. All Rights Reserved. Chapter 440 Discriminant Analysis Introduction Discriminant Analysis finds a set of prediction equations based on independent variables that are used to classify individuals into groups. There are two possible objectives in a Discriminant Analysis : finding a predictive equation for classifying new individuals or interpreting the predictive equation to better understand the relationships that may exist among the variables. In many ways, Discriminant Analysis parallels multiple regression Analysis .

Discriminant analysis assumes linear relations among the independent variables. You should study scatter plots of each pair of independent variables, using a different color for each group. Look carefully for curvilinear patterns and for outliers. The occurrence of a curvilinear relationship will reduce the power and the discriminating ability

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