This application simulates the Xbar control chart, that is one of the tools of statistical quality control, or statistical process control (SPC).
It computes by simulation the ARL for different mean and sigma shifts. Concretely, the shifts are measured by d = (m1 - m0) / sigma0 and by r = sigma1 / sigma0.
The control limits can be placed at 2 or 3 sigma. In addition, it is possible to change the sample size.
In addition, the application simulates the real performance of the Xbar control chart (in-control and out-of-control ARLs) when parameters are estimated in Phase I.
There is a twin application for OSX / MAc available in its store. The application is also available for other operating systems.
At this moment the application languages are Spanish and English.
This app has been updated by Apple to use the latest Apple signing certificate.
A new tab where it is possible to simulate the real performance of the Xbar control chart (in-control and out-of-control ARLs) when parameters are estimated in Phase I.
Up to six family members will be able to use this app with Family Sharing enabled.