If we want the standard deviation of this distribution right here, this is the variance right now, so we just need to take the square root. So let's calculate this. We actually know these values. S1, our sample standard deviation for group 1 is 4.67. We wrote it right here as well. It's 4.67 and 4.04. So this is 4.67, and this number right here is 4.04.