Old habits die hard. That, in a nutshell, is the concept behind regression to the mean. To understand this concept, let’s first define what mean, means (and forgive me for sounding like Bill Clinton during the Lewinski affair). Mean is the highfalutin way statisticians say “average”. With regression to the mean, the philosophy is that…
Tag: Data
Roll Up Your Sleeves, Not Your Counts
Rolling up your shirtsleeves has long been associated with the idea of working hard. I have zero issues with working hard – but you should work smart as well. I was reminded of this recently in a discussion with a colleague regarding a table that stores distinct record counts by day. The idea behind the…
Who’s On First?
The six basic questions every data warehouse should answer.
Rock the Data! 