So this first pair right over here, so the z-score for this one is going to be one minus how far it is away from the x sample mean divided by the x sample standard deviation, 0.816, that times one, now we're looking at the y variable, the y z-score, so it's one minus three, one minus three over the y sample standard deviation, 2.160, and we're just going to keep doing that. I'll do it like this. So the next one, it's going to be two minus two over 0.816, this is where I got the two from, and I'm subtracting from that the sample mean right over here, times, now we're looking at this two, two minus three over 2.160 plus, I'm happy there's only four pairs here, two minus two again, two minus two over 0.816, times, now we're gonna have three minus three, three minus three over 2.160, and then the last pair, you're going to have three minus two over 0.816 times six minus three, six minus three over 2.160. So before I get a calculator out, let's see if there's some simplifications I can do. Two minus two, that's gonna be zero, zero times anything is zero, so this whole thing is zero. Two minus two is zero, three minus three is zero, is gonna actually be zero times zero, so that whole thing is zero. Let's see, this is going to be one minus two, which is negative one, one minus three is negative two, so this is going to be R is equal to 1 3rd times, negative times negative is positive, and so this is going to be two over 0.816 times 2.160, and then plus three minus two is one, six minus three is three, so plus three over 0.816 times 2.160, well these are the same denominator, so actually I could rewrite, if I have two over this thing plus three over this thing, that's going to be five over this thing.