期刊
JOURNAL OF QUALITY TECHNOLOGY
卷 46, 期 3, 页码 265-280出版社
AMER SOC QUALITY CONTROL-ASQC
DOI: 10.1080/00224065.2014.11917969
关键词
Assignable Cause; Change Point; Common Cause Variation; Control Chart; Self-Starting Chart; SPC; Statistical Process Control
We provide an overview and perspective on the Phase I collection and analysis of data for use in process improvement and control charting. In Phase I, the focus is on understanding the process variability, assessing the stability of the process, investigating process-improvement ideas, selecting an appropriate in-control model, and providing estimates of the in-control model parameters. In our article, we review and synthesize many of the important developments that pertain to the analysis of process data in Phase I. We give our view of the major issues and developments in Phase I analysis. We identify the current best practices and some opportunities for future research in this area.
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