If I square it, I get 64. And then I'm going to divide all of that by 5. And I don't need to use a calculator, but I tend to make a lot of careless mistakes when I do things while I'm making a video. So let me get 25 plus 9 plus 1 plus 1 plus 64 divided by 5. So I get 20. So the average squared distance, or the mean squared distance from our population mean is equal to 20. And you might say, wait, these things aren't 20.