So this is going to give me a negative number, but if I square it, it's going to be positive. So it's essentially going to be the squared distance between 1 and my mean. And then to that, I'm going to add the squared distance between 3 and my mean. And to that, I'm going to add the squared distance between 5 and my mean. And since I'm squaring, it doesn't matter if I do 5 minus 6 or 6 minus 5. When I square it, I'm going to get a positive result regardless. And then to that, I'm going to add the squared distance between 7 and my mean.