A class of shrinkage testimators for the shape parameter of the Weibull lifetime model
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نویسنده
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al-hemyari z.a. ,al-dabag h.a.
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منبع
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pakistan journal of statistics and operation research - 2012 - دوره : 8 - شماره : 2 - صفحه:167 -184
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چکیده
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In this paper,we propose two classes of shrinkage estimators for the shape parameter of the weibull distribution in censored samples. the proposed estimators are studied theoretically and have been compared numerically with existing estimators. computer intensive calculations for bias and relative efficiency show that for,different values of levels of significance and for varying constants involved in the proposed estimators,the proposed testimators fare better than classical and existing estimators.
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کلیدواژه
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Bias ratio; Censored data; Preliminary test; Relative efficiency; Shape parameter; Shrinkage; Weibull failure model
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آدرس
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