A Bootstrap Confidence Limit for Process Capability Indices

摘要：

The process capability indices are widely used by quality professionals as an estimate of process capability.The lower confidence limits of PCIs are difficult to be estimated by parametric methods for some non-normal distributed processes.The non-parametric but computer intensive Bootstrap techniques are utilized for these cases.The Percentile-t Bootstrap (PTB) method is used to estimate the confidence interval for PCIs of these non-normal distributed processes in the paper.A series of simulations using different distributions,parameters and sample size for the index Cpk was undertaken to compare the performance and reliability of PTB to SB,PB and BCPB.The results show that the PTB method is better to estimate lower confidence limits of PCIs for most non-normal distributed processes.

关键词： Process capability index Bootstrap Confidence limit non-normal distribution

作者: YANG Jianfeng

作者单位: School of Business,Zhengzhou University,P.R.China,450001

会议类型: 国际会议

会议名称: 2007 International Conference on Management Science and Engineering(2007管理科学与工程国际学术会议)

会议地点: 河南焦作

会议语种:英文

页码: 2669-2674

在线出版日期: 2007-08-20（万方平台首次上网日期，不代表论文的发表时间）