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 ...

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.

Two decades ago, when I was just out of graduate school and working in the automotive industry, I got my first introduction to the statistical process-control chart. We used this laborious ...

Using process control chart techniques to analyze crime rates in Houston, Texas. Journal of the Operational Research Society, 47 (7): 871-881. Baik, S., W. Kim, and B. Kim. 2009. In-situ detection of ...

Control chart- a time-ordered plot of sample statistics, used to distinguish between random and nonrandom variability Control limits- the dividing lines between random and nonrandom deviations from ...

Traditional statistical process control charts assume that observations are independent and normally distributed about some mean. We investigate the robustness of traditional charts to data ...

The problem of using time-varying trajectory data measured on many process variables over the finite duration of a batch process is considered. Multiway principal-component analysis is used to ...