Archived App
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This application is designed to:
1.- To calculate the ARL of a EWMA control chart given its parameters and makes a comparison versus the standard Shewhart (Xbar) control chart.
2.- To find the best parameters (optimization) to reach a given in-control ARL and to minimize the out-of-control ARL for a given shift.
3.- To plot an ARL chart, showing a comparison of performance versus the standard Xbar control chart.
In this application d = (m1 - m0) / sigma0. And r = sigma1 / sigma0
The available languages are Spanish and English.
There is a twin application for OS X available in its store.
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What's New in Optimum EWMA control chart
3.1
December 3, 2020
Solved a bug when computing the ARL of the equivalent Xbar chart when there is a shift in the variability.
