Control Charts: Fundamentals and Concepts


In the previous chapter, we studied the run charts that helped us describe the changes in the process output and also the variation. Just as the run chart is a time series plot that plots the process variable over time, a control chart is a modified form of a run chart with control limits added on the run charts. A control chart is one of the tools used to monitor and control a process and systematically reduce process variability. Systematic variation reduction in product and process quality characteristics leads to better product or service performance, better perceived quality by customers, and eventually enhanced competitive position and improved market share. Since the control ...

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