So the units here are going to be square meters. And so you might say, hey, that's kind of a weird unit. If we're trying to figure out, if we're trying to visualize or think about how dispersed we are from the mean, when I visualize it, I visualize dispersion or how varied they are in terms of meters, not meters squared. So what could we do? And a big hint, this comes out of just even the notation for variance. It's this sigma symbol squared. So why don't we just take the square root of it?