That xkcd is such a joker. Munroe should start a comic.
xkcd: Ensemble model
A Day in the Life of Americans
I wanted to see how daily patterns emerge at the individual level and how a person’s entire day plays out. So I simulated 1,000 of them.
Who is Older and Younger than You
Here’s a chart to show you how long you have until you start to feel your age.