Wikipedia's picture is way more instantly intuitive (for non-americans who don't care much about parties, seinfeld or baseball) http://en.wikipedia.org/wiki/Fi

Wikipedia's picture is way more instantly intuitive (for non-americans who don't care much about parties, seinfeld or baseball) http://en.wikipedia.org/wiki/File:Simpson%27s_paradox_continuous.svg http://en.wikipedia.org/wiki/File:Simpson%27s_paradox_contin...