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February, 1972 The Asymptotic Inadmissibility of the Sample Distribution Function
R. R. Read
Ann. Math. Statist. 43(1): 89-95 (February, 1972). DOI: 10.1214/aoms/1177692704


Given a sample of size $n$, a continuous estimator for a distribution $F$ (based on Pyke's modified sample distribution) is shown to have the property that its expected squared error, for almost all $x$ in the positive sample space of $F$, is no larger than that of the sample distribution function given $F$ and $n$ sufficiently large. Letting risk be given by the expected squared error integrated with respect to $F$, it is shown that this estimator dominates both the sample distribution and the other best invariant estimator found by Aggarwal, given $F$ and $n$ sufficiently large. Other common estimators cannot serve in this dominating role. Explicit calculation of risk is made when $F$ is the uniform distribution. In this case the estimator strictly dominates the sample distribution for all $n \geqq 1$.


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R. R. Read. "The Asymptotic Inadmissibility of the Sample Distribution Function." Ann. Math. Statist. 43 (1) 89 - 95, February, 1972.


Published: February, 1972
First available in Project Euclid: 27 April 2007

zbMATH: 0239.62015
MathSciNet: MR300378
Digital Object Identifier: 10.1214/aoms/1177692704

Rights: Copyright © 1972 Institute of Mathematical Statistics


Vol.43 • No. 1 • February, 1972
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