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Unbiased Maximum-Likelihood Estimation of a Weibull Percentile when the Shape Parameter is Known

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1 Author(s)
McCool, John I. ; Engrg. and Res. Center

The maximum-likelihood (ML) estimator for a percentile of a Weibull distribution with a known shape parameter is considered. Multiplicative correction factors are listed for rendering the ML estimator mean or median unbiased in the cases where the samples are type II censored with or without replacement. The correction factors depend upon the number of failures and the shape parameter but are independent of the sample size and the percentile being estimated.

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Reliability, IEEE Transactions on  (Volume:R-18 ,  Issue: 2 )