My Very First Normal Distribution

Look, it's a normal distribution curve!!

Sweet. See, here's the distribution of player heights on the Mets 40-man roster (plus 4 guys on the DL). Notice that it's a classic bell curve. This is important because random stuff, like the number of people in the room of various heights, tend to follow the bell curve. Meaning, most people will be clustered around the middle, with few at the extremes.

Non-random stuff, like the distribution of talent in MLB, tends not to.