R Chart
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Been meaning to write this for awhile…
An R-Chart is a statistical quality assurance tool used to determine if a process is stable (and predictable). It is intended to maintain and improve the quality of a process (a more formal definition is available at QualityAdvisor.com. You can also read about an R Chart at Wikipedia or learn about how to interpret them at Quality America.
That being said, the R-Programming Language is a programming environment geared towards a wide variety of statistical analysis tasks. However, it can be used specifically in statistical quality control efforts. In fact, there are several R packages specifically designed with this in mind:
The name of this blog is R-Chart. This was intended to convey the use of the R package primarily in creating graphical charts. I kind of liked the overloaded meaning that indicated a desire for quality in a process but I must admit, that is not the primary focus of the blog at this point. So best wishes on your QA tasks – I know that you can create your R Charts using Excel, but maybe you should look into R to assist you in the effort…
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