Diaspora* comments introduced me to Howard Wainer's statistics articles and inspired me to learn some statistics. (fn:1) A WikiHow page helped me, (fn:2) and got back into the Racket documentation. (fn:3) But since I was talking with a statistics teacher about getting students ready for his class by establishing a base with DrRacket and algebra, it seemed like a good idea to do all the WikiHow steps in Racket, before using the convenience functions from math/statistics