Estimation of Expected Life in the Presence of an Outlier Observation
作者:
B.K. Kale,
S.K. Sinha,
期刊:
Technometrics
(Taylor Available online 1971)
卷期:
Volume 13,
issue 4
页码: 755-759
ISSN:0040-1706
年代: 1971
DOI:10.1080/00401706.1971.10488847
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Consider a life testing experiment consisting ofnitems, (n– 1) of which have the same expected life while one of them could have a much longer expected life. The standard estimators based on a homogeneous model if used in such a case, would tend to overestimate and result in a large mean squared error (MSE). The present paper considers (n– 1) items having p.d.f. given by l/σ exp (–x/σ) while the remaining one has p.d.f. α/σ exp (–xα/σ), 0 < < 1. We consider estimators of c by linear combinations of the first few order statistics. An optimal estimator is suggested and its MSE is compared with that of the standard estimators. The cases ofn= 3 and 4 are explicitly evaluated.
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