Advances and Applications in Statistics
Volume 4, Issue 2, Pages 129 - 137
(August 2004)
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CONFIDENCE INTERVALS FOR CAPABILITY INDICES
Salicru Miquel (Spain) and Antonio Vaamonde (Spain)
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Abstract: From Taylor’s first order estimate and from expectancy and variance adjustments we obtain confidence intervals for the family of capability indices introduced by Vännman [Comm. Statist. Theory Methods 26 (1997a), 159-180; 26 (1997b), 2049-2072]. The evaluation of confidence interval accuracy is achieved from a simulation study in which the covering percentage and the confidence interval length for the asymptotic, bootstrap percentile and bootstrap-t methods are analysed. |
Keywords and phrases: quality control, process capability. |
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