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On the Covariance of Two Noncentral F Random Variables and the Variance of the Estimated Linear Discriminant Function

Frank Critchley and Ian Ford
Biometrika
Vol. 71, No. 3 (Dec., 1984), pp. 637-638
Published by: Oxford University Press on behalf of Biometrika Trust
DOI: 10.2307/2336578
Stable URL: http://www.jstor.org/stable/2336578
Page Count: 2
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Abstract

The covariance of two noncentral F random variables with a common covariance matrix is obtained from which the variance of their difference follows easily. An application of this latter result in discriminant analysis is then given.

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