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. 1997 Dec;53(4):1284-92.

Discriminant diagnostics

P A Lachenbruch  1
Affiliations
  • PMID: 9423250

Discriminant diagnostics

P A Lachenbruch. Biometrics. 1997 Dec.

Abstract

I discuss diagnostic methods for discriminant analysis. The equivalence with linear regression is noted and regression diagnostics are considered. The leverage is a function of the linear discriminant function and the Mahalanobis distance of the observation from the group mean. The distribution of this distance is approximately chi-square with degrees of freedom equal to the number of variables. Standard tests may be used to examine the normality assumption. Some examples are given.

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