Automatically generate datasets that teach people how (not) to create statistical mirages

FJ Anscome's classic, oft-cited 1973 paper "Graphs in Statistical Analysis" showed that very different datasets could produce "the same summary statistics (mean, standard deviation, and correlation) while producing vastly different plots" -- Anscome's point being that you can miss important differences if you just look at tables of data, and these leap out when you use graphs to represent the same data. (more")