The Problem of the Criteria Testing for Assignable Causes in GB Shewhart control charts and Its Adjustment

被引：0

作者：

Sun Xiaosu ^{[1
]}

机构：

[1] Shandong Inst Business & Technol, Dept Stat, Yantai 264005, Peoples R China

来源：

RECENT ADVANCE IN STATISTICS APPLICATION AND RELATED AREAS, VOLS I AND II | 2009年

关键词：

Shewhart Control Charts; Test for Assignable Causes; Probability; Run Length;

D O I：

暂无

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

In the article, we study the out-of-control criteria in Shewhart control charts of GB/T 4091-2001 (idt ISO 8258:1991). We calculate the probability of every criterion to test for assignable cause precisely, the result is that the probability of criterion eight which is "successive eight dots are at two sides of center line,but none dot is at C zone" is much smaller than the probability of former seven. We suggest that criterion eight should be revised as "successive five dots are at two sides of center line,but none dot is at C zone" so as that the probablity of corresponding event can be matched with the probablity of other criteria.

引用

页码：715 / 720

页数：6