Level of arousal and armadillo population density

Many lists of maps promise to change the way you see the world, but this one actually does.

The ever so popular Walmart growth map gets an update, and yes, it still looks like a wildfire. Sam’s Club follows soon after, although not nearly as vigorously.

The data goes back to 1960 and up to the most current estimates for 2009. Each line represents a country.

I call myself a statistician, because, well, I’m a statistics graduate student. However, the most important things I’ve learned are less formal, but have proven extremely useful when working/playing with data.