We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Computer program for calculating the p-value in testing process capability index C<sub>pmk</sub>.
- Authors
Pearn, W. L.; Lin, P. C.
- Abstract
Many process capability indices, including Cp, Cpk, and Cpm, have been proposed to provide numerical measures on the process potential and performance. Combining the advantages of these indices, Pearn et al. (1992) introduced a new capability index called Cpmk, which has been shown to be a useful capability index for processes with two-sided specification limits. In this paper, we implement the theory of a testing hypothesis using the natural estimator of Cpmk, and provide an efficient Maple computer program to calculate the p-values. We also provide tables of the critical values for some commonly used capability requirements. Based on the test we develop a simple step-by-step procedure for in-plant applications. The practitioners can use the proposed procedure to determine whether their process meets the preset capability requirement, and make reliable decisions. Copyright © 2002 John Wiley & Sons, Ltd.
- Subjects
COMPUTER software; STATISTICAL hypothesis testing; HYPOTHESIS; DISTRIBUTION (Probability theory); MATHEMATICAL statistics
- Publication
Quality & Reliability Engineering International, 2002, Vol 18, Issue 4, p333
- ISSN
0748-8017
- Publication type
Article
- DOI
10.1002/qre.465