The sample mean for x is quite straightforward to calculate. It would just be one plus two plus two plus three over four, and this is eight over four, which is indeed equal to two. The sample standard deviation for x, we've also seen this before. This should be a little bit of review. It's gonna be the square root of the distance from each of these points to the sample mean squared. So one minus two squared plus two minus two squared plus two minus two squared plus three minus two squared. All of that over, since we're talking about sample standard deviation, we have four data points, so one less than four is all of that over three.