Control charts help you understand the variation that is always present in processes. The control chart includes upper and lower control limit lines with a centerline.

The following statements create a p chart displaying both sets of control limits: title 'p Chart with Revised Limits for Failed Circuits'; symbol v=dot c=salmon; proc shewhart data=circ_one ...

This paper unifies and extends previously published characterizations of moving average, geometric moving average, and cumulative sum control chart procedures. It presents comparable characterizations ...