Statistical Myths #3

Causation

People who work with statistics all know
In this and in every nation
What seems to be cause is quite often not so
Causation is not correlation

For instance, the number of churches there are
Seems very correlative to
The number of taverns and bars that are there
And this fact has long, long been true

But one’s not the cause of the other, in spite
Of what you might think of salvation;
They both grow because of a third thing, which is:
Expansion of the population