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QICID: 15414
Title: Column: Statistics Roundtable: Variation in SPC
Copyright: 2002, ASQ
Author: Mason, Robert L.; Young, John C.
Organization: Southwest Research Institute in San Antonio, TX; InControl Technologies in Lake Charles, LA;
Subject: Statistical process control (SPC),Variation;
Series: Quality Progress, Vol. 35, No. 4, April 2002, pp. 79-81
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Abstract: The ultimate goal of univariate SPC is to eliminate all sources of special cause variation in a process. Unfortunately, special cause variation is often process inherent and in many cases not removable by simple adjustments. One way to handle the problem when process variation is composed of random variation plus special cause variation is to use a multivariate control procedure.
Number of pages: 3
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