Using Counts to Monitor a Process Mean
作者:
FarnumNicholas R.,
StantonLaverne W.,
期刊:
Journal of Quality Technology
(Taylor Available online 1986)
卷期:
Volume 18,
issue 1
页码: 22-28
ISSN:0022-4065
年代: 1986
DOI:10.1080/00224065.1986.11978982
出版商: Taylor&Francis
关键词: Process Control;Sign Test;Narrow Limit Gauging;PRE-Control
数据来源: Taylor
摘要:
A procedure for controllingαprocess mean to a target midway between two specified values is presented. It is assumed that the process variable has a normal distribution with unknown mean and variance, and that the data consists solely of counts of the number of observations in a sample which are above, below, and between specified gauge values. Charts are given for conveniently accomplishing the test and for estimating the amount of adjustment needed. Finally, the choice of gauge limits is discussed and comparisons are made with variables procedures.
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