Control charts have two general uses in an improvement project. Undeniably, the most common application is as a tool to ...

2 types of variation and how we distinguish between common and special cause variation, along with how to create a rational subgroup. We also cover the equations and constants for the X-bar and R ...

The choice of control chart parameters-sample size, sampling interval, and control limits-is considered from an economic point of view. A general process model is considered, and the hourly cost ...

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 ...

In an attempt to improve the procedures for statistical process control many researchers have developed and proposed a variety of adaptive control charts in the last decade. The common characteristic ...