A control chart consists of several parts. It has two control limits and an average line. The bottom dashed line is called the lower control limit (LCL). The solid middle line is the average of the ...

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

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 have been widely used for monitoring production processes and identifying assignable causes of variability. Many papers investigate the application of control charts in different ...

Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 41, No. 1 (1992), pp. 147-158 (12 pages) Acceptance control charts establish control limits based on specification limits ...

As manufacturing technology moves toward more computerized automation, statistical process control (SPC) techniques must adapt to keep pace with the new environment and take advantage of the ...

Measure: Only those characteristics that can be counted or measured are candidates for control. It is important to consider how measurement will be accomplished. Correct: When a process is out of ...