So it's kind of, not exactly, but kind of the average distance from the mean. So the smaller the standard deviation, the closer a lot of the points are going to be to the mean. So we should get kind of a narrower graph. And let's see that happens. So when the standard deviation is 2, we see that. The graph, you're more likely to be really close to the mean than further away. And if you make the standard deviation, I don't know, if you make it 10, all of a sudden you get a really flat graph.