Real data can train your model of the world falsely : http://en.wikipedia.org/wiki/Lies,_damned_lies,_and_statistics http://en.wikipedia.org/wiki/Lies,_damned_

Real data can train your model of the world falsely : http://en.wikipedia.org/wiki/Lies,_damned_lies,_and_statistics http://en.wikipedia.org/wiki/Lies,_damned_lies,_and_statisti...