Simpson's paradox is an example of the ecological fallacy. I think specifically when you have the signs of the group relationship being the opposite of the ind

Simpson's paradox is an example of the ecological fallacy. I think specifically when you have the signs of the group relationship being the opposite of the individual relationship like in http://blog.statwing.com/wp-content/uploads/2012/12/ecological-fallacy.png http://blog.statwing.com/wp-content/uploads/2012/12/ecologic.... Wikipedia has more specific math for this at http://en.wikipedia.org/wiki/Ecological_fallacy#Simpson.27s_Paradox http://en.wikipedia.org/wiki/Ecological_fallacy#Simpson.27s_...