Transcription of CONTROL CHART - Air University
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CONTROL CHART - Air University
Basic Tools for process ImprovementCONTROL CHART1 Module 10 CONTROL CHARTB asic Tools for process Improvement2 CONTROL CHARTWhat is a CONTROL CHART ?A CONTROL CHART is a statistical tool used to distinguish between variation in a processresulting from common causes and variation resulting from special causes. Itpresents a graphic display of process stability or instability over time (Viewgraph 1).Every process has variation. Some variation may be the result of causes which arenot normally present in the process . This could be special cause variation. Somevariation is simply the result of numerous, ever-present differences in the process . This is common cause variation. CONTROL Charts differentiate between these twotypes of goal of using a CONTROL CHART is to achieve and maintain process stability.
Basic Tools for Process Improvement 6 CONTROL CHART What are the elements of a Control Chart? Each Control Chart actually consists of two graphs, an upper and a lower, which are described below under plotting areas.A Control Chart is made up of eight
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