And I want to square that distance. And then I don't want to just divide it by n. I don't want to just divide it by 100. Remember, I'm trying to estimate the true population mean in order for this to be the best estimator of that. And I gave you an intuition of why many, many videos ago. We divide by 100 minus 1. We divide by 100 minus 1, or 99. Let's get the calculator out to actually figure out our sample variance.