An Interactive Tool to Explain Simpson’s Paradox

October 8, 2013

As just about every statistics student can attest, Simpson’s Paradox — a statistical phenomenon where an apparent trend is reversed when you look at subgroups — is notoriously hard to explain. You can look at examples — say, the fact that US wages are rising overall, but dropping within every educational group — but that don’t really help to explain the paradox. (more…)