So what's this going to be equal to? So I have 1 plus 4 plus 9 right over here, that's 5 plus 9, this right over here is 14, and then we also have another 14 right over here, because we have a 1 plus 4 plus 9, so that right over there is also 14, and then we have 2 over here, so it's going to be 28, 14 times 2, 14 plus 14 is 28, plus 2 is 30, is equal to 30. So our total sum of squares, and actually if we wanted the variance here, we would divide this by the degrees of freedom, and we've learned multiple times the degrees of freedom here, so let's say that we have, so we know that we have m groups over here, so let me just write it as m, and I'm not going to prove things rigorously here, but I want to show you where some of these strange formulas that show up in statistics books actually come from, without proving it rigorously, more to give you the intuition. So we have m groups here, and each group here has n members. So how many total members do we have here? Well we had m times n, or 9, 3 times 3 total members. So our degrees of freedom, and remember, you have this many, however many data points you had, minus 1 degrees of freedom, because if you know, if you knew the mean of means, if you know the mean of means, if you assume you knew that, then you only would, then only 9 minus 1, only 8 of these are going to give you new information, because if you know that, you could calculate the last one, or it really doesn't have to be the last one, if you have the other 8, you could calculate this one, if you have 8 of them, you can always calculate the 9th one, using the mean of means.