If I know my standard deviation, or maybe if I know my variance, the variance is just the standard deviation squared. If you don't remember that, you might wanna review those videos. But if I know the variance of my original distribution, and if I know what my n is, how many samples I'm gonna take every time before I average them in order to plot one thing in my sampling distribution of my sample mean, is there a way to predict what the mean of these distributions are? And so this, sorry, the standard deviation of these distributions, and to make, so you don't get confused between that and that, and let me say the variance. If you know the variance, you can figure out the standard deviation. One is just the square root of the other. So this is the variance of our original distribution.