The use of multiple control limits and multiple corresponding levels of response for processes is an effective way for statistical process control when different assignable causes exist which lead to ...

Peihua Qiu, Changliang Zou, CONTROL CHART FOR MONITORING NONPARAMETRIC PROFILES WITH ARBITRARY DESIGN, Statistica Sinica, Vol. 20, No. 4 (October 2010), pp. 1655-1682 ...

Control charts have two general uses in an improvement project. Undeniably, the most common application is as a tool to monitor process stability and control. A less common, although some might ...

A control chart plots measured values along with upper and lower quality control limits. Values appearing outside these limits are unacceptable and could indicate a manufacturing problem. Although ...

Control charts usually present a graphic display of process stability and/or instability with time, from which the you can determine mean and standard deviation.

Control charts that are properly constructed and maintained prevent false out-of-control signals and provide a useful method for monitoring a process.