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Definition: Discriminant Analysis
Discriminant Analysis is a method of classifying objects into one of known number of groups. It can also be used to evaluate whether the classification of a number of objects has been properly done into a known number of classified groups.
Discriminant analysis is similar to regression where a dependent variable is predicted on the basis of many independent variables by the regression equation and these variables are interval numerical variables whereas in discriminant analysis, the variables are categorical. Also, regression is a continuous prediction whereas discriminant analysis is a discrete prediction.
There can be linear discriminant analysis that considers separation into two classes, or it can even be multiclass discriminant analysis that considers separation into many classes.