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Done for tonight.  I mentioned Six Sigma in a prior post.  I was professionally trained by the gentlemen that wrote this book back in my online education days in 2006 and it changed the way I looked at everything.  As I travel all over and discuss analytics it is clear to me many people have missed out on an essential understanding of statistics and how to evaluate a process.


For example, ask your colleagues or vendors some of the following (in order of difficulty).  If they can't answer them immediately why are they consulting you and/or making decisions on your data???


  1. What's the actual formula for ROI? (they say it every day so it should be easy)
  2. What's the difference between a correlation and a conversion?
  3. Why would you use a histogram chart? 
  4. Whats the difference between normal and special cause variation?