摘要
利用过程能力指数评价过程能力,其可靠性程度会受到抽样误差、测量误差以及数据自相关性的影响,分析了观测数据受各种因素影响下过程能力指数估计的统计性质,给出了通过添加纠偏系数获得过程能力指数无偏估计或无偏估计近似值的方法。
The reliability to assess process capability using process capability indices is affected by sampling errors, measurement errors and autocorrelated data. The statistical properties of the estimator of process capability indices are analysized when sample data are affected by these influence factors. The method to obtain the unbiassed estimator or the uubiassed estimator approximate value of process capability indices are given.
出处
《数理统计与管理》
CSSCI
北大核心
2013年第5期839-846,共8页
Journal of Applied Statistics and Management
基金
江苏省泰州市科技发展计划(指导性)项目(项目编号2011043)
关键词
过程能力指数
抽样误差
测量误差
自相关
估计
process capability indices, sampling errors, measurement errors, autocorrelation, estimator
