[air7]

This is one of my favorite paradoxes too. Here's why:

"... given the same table, one should sometimes follow the partitioned and sometimes the aggregated data, depending on the story behind the data, with each story dictating its own choice. Pearl considers this to be the real paradox behind Simpson's reversal." [0]

[0]https://en.wikipedia.org/wiki/Simpson%27s_paradox

[emmelaich]

Not really a paradox, but you will like https://en.wikipedia.org/wiki/Anscombe%27s_quartet

(if you've not encountered it before, which I suspect is unlikely!)