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Cited 3 time in webofscience Cited 4 time in scopus
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Evaluation of Modified Non-Normal Process Capability Index and Its Bootstrap Confidence Intervals

Title
Evaluation of Modified Non-Normal Process Capability Index and Its Bootstrap Confidence Intervals
Authors
Kashif, MuhammadAslam, MuhammadAl-Marshadi, Ali HusseinJun, Chi-HyuckKhan, Muhammad Imran
Date Issued
May-2017
Publisher
Institute of Electrical and Electronics Engineers Inc.
Abstract
Process capability index (PCI) is used to quantify the process performance and is becoming an attracted area of research. A variability measure plays an important role in PCI. The interquartile range (IQR) or the median absolute deviation (MAD) is commonly used for a variability measure in estimating PCI when a process follows a non-normal distribution In this paper, the efficacy of the IQR and MAD-based PCIs was evaluated under low, moderate, and high asymmetric behavior of the Weibull distribution using different sample sizes through three different bootstrap confidence intervals. The result reveals that MAD performs better than IQR, because the former produced less bias and mean square error. Also, the percentile bootstrap confidence interval is recommended for use, because it has less average width and high coverage probability.
URI
http://oasis.postech.ac.kr/handle/2014.oak/50722
ISSN
2169-3536
Article Type
Article
Citation
IEEE Access, vol. 5, page. 12135 - 12142, 2017-05
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 JUN, CHI HYUCK
Dept of Industrial & Management Enginrg
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