The Federal Courts are quite good about requiring validation and so on for
facts, including statistical results <
http://www.fjc.gov/public/pdf.nsf/lookup/SciMan3D01.pdf/$file/SciMan3D01.pdf>
free download.

But, using google and asking friends, I've not been able to find any
federal cases that admitted results from analyses using R into evidence.
 Given the near ubiquity of R, I'd be surprised but it's important to have
examples that used R on a Mac to get the results accepted.

Dwight Hines

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