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数学
INADMISSIBILITY OF THE USUAL ESTIMATOR FOR THE LOCATION PARAMETERS OF SPHERICALLY SYMMETRIC DISTRIBUTIONS
<正> I. INTRODUCTIONIt is well-known that the usual estimator, the sample mean, for the mean of a multivariate normal distribution is inadmissible. After the improvement of the original proof, several concise proofs are proposed, referring to Anderson, for example.
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Chinese Science Bulletin
1989年07期

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