These are these numbers squared. So this is essentially 63.8 is the population, 63.8 squared is the population variance. So that's interesting by itself, but it really doesn't tell us a lot so far about why we divide by n minus one. And this is the interesting part. We can now start to take samples, and we can decide what sample size we wanna do. I'll start with really small samples, so the smallest possible sample that makes any sense. So I'm gonna start with really small samples.