I know, I know… I haven’t been posting a lot of statistics materials on here, but this is one actually turned out to be pretty sweet. Here’s how I did it: On the top dotplot each student plotted their month of birth, along with the month of birth for three other people such as their mother, father, sibling, or closest friend. Then on the bottom dotplot each student plotted the mean of each of the four numbers that they plotted on the top dotplot. It turns out that this beautifully illustrates the Central Limit Theorem. After I did this activity in class, I realized that this Central Limit Theorem Activity does the same thing except by having the students roll four dice and then subsequently finding the average of the four rolls. Ohhh well, a lesson learned.