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ARL Xbar and S control charts Screenshot 0
ARL Xbar and S control charts Screenshot 1
ARL Xbar and S control charts Screenshot 2
ARL Xbar and S control charts Screenshot 3

About ARL Xbar and S control charts

This application simulates the Xbar and S control charts, that are someof the tools of statistical quality control, or statistical process control (SPC).

It computes the ARL for different mean and sigma shifts. Concretely, the shifts are measured by d = abs(m1 - m0) / sigma0 and by r = sigma1 / sigma0.

In addition, it measures the number of times that each control chart shows an out-of-control alarm. For example, it is possible to see that the Xbar control chart detects sigma shifts too.

On the other hand, it simulates the effect of the errors in the estimation of mean and sigma during Phase I in the real performance of the scheme.

At this moment the application languages are Spanish and English.

A twin Windows version is available here:

https://mega.nz/#!XIYGWSAA!HN8a9oXLUJ0I98c7omWeYhhvH68h1yuFXuuJnenUT4M

This application is also available for iOS (Iphone, iPad) and OS X (MAC). Just search in their stores.

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