The R-Project is continuously evolving, and therefore it is very likely that, if you have a different configuration that the one used during the book production, you get unexpected results. As we are also continuously applying R to Six Sigma, and improving the SixSigma package, we will include here information and code updates in order to get the best of R for Six Sigma, and keep the book examples reproducible.

November 2020

A couple of links in the book were broken (Thanks to Germans Frolovs for reporting):

• Chapter 2: http://www.qualitycontrolwithr.com/lab.csv (fixed)
• Appendix C: http://google-styleguide.googlecode.com/svn/trunk/Rguide.xml (Broken link)
  https://google.github.io/styleguide/Rguide.html (updated place)

February 2016

SixSigma package has been updated to version 0.9-2. Main changes:

• Functions for monitoring non-linear profiles
• Data sets for the example in the book "Quality Control with R"
• Some bug fixes and improvements