# Simpson's Paradox [[Statistics]] ![[Pasted image 20220528170754.png]] > [!quote] Simpson’s Paradox is a statistical phenomenon where an association between two variables in a population emerges, disappears or reverses when the population is divided into subpopulations. [Simpson’s Paradox (Stanford Encyclopedia of Philosophy)](https://plato.stanford.edu/entries/paradox-simpson/#:~:text=Simpson's%20Paradox%20is%20a%20statistical,population%20is%20divided%20into%20subpopulations.)