ARL Xbar and S control charts

Free

2.0for iPhone, iPad

Francisco Aparisi

Developer

Nov 14, 2017

Update Date

Productivity

Category

App Store

Age Rating

Apps in this category do not contain restricted content.

Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

ARL Xbar and S control charts Screenshots

iPad

iPhone

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 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.

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, there is a tab where it sis possible to simulate the effect of the errors in the estimation of the mean and sigma during Phase I (real in-control and out-of-control ARLs)

There is a twin application for OS X available in its store.

At this moment the application languages are Spanish and English.

What's New in the Latest Version 2.0

Last updated on Nov 14, 2017

Old Versions

A new tab where it is possible to simulate the real performance of scheme Xbar-S (in-control and out-of-control ARLs) when parameters are estimated in Phase I.

Version History

2.0

Feb 23, 2016

A new tab where it is possible to simulate the real performance of scheme Xbar-S (in-control and out-of-control ARLs) when parameters are estimated in Phase I.

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