On: Tabs, spaces and your salary – how is it really?

[Sean1708]

> It must be caused by something

You'd be surprised: http://www.tylervigen.com/spurious-correlations

[marcosdumay → Sean1708]

Spurious correlations normally aren't present on sub-populations (unless you try to segment your population on many different ways, what they did, but it was present on nearly all of the ways).