Sample Size Determination for Lower Confidence Limits for Estimating Cpm

摘要：

Until recently, estimates of process capability index C has been point estimates. However, a more appropriate estimate would be provided by a confidence interval. In this case, a one-sided interval is necessary, since the real interest is in how small the process capability index can be. This paper provides two equations to estimate the sample size necessary to achieve a desired one-sided lower confidence limit with specified confidence level, makes a comparative study between the two equations. The conservative sample size should be 30 and the optimal 50-100.

关键词： Sample size determination One-sided lower confidence limit Process capability index C

作者: Sun Xiaosu

作者单位: Dept.of Statistics, Shandong Institute of Business & Technology, Yantai 264005, China

会议类型: 国际会议

会议名称: 2010 International Conference on Probability and Statistics of the International Institute for General Systems Studies(国际一般系统理论研究会中国概率统计学会第二届学术会议IIGSS-CPS2010)

会议地点: 南京

会议语种:英文

页码: 355-358

在线出版日期: 2010-07-29（万方平台首次上网日期，不代表论文的发表时间）