And then finally we have the third group. We're finding all of the sum of squares from each point to its central tendency within that. But we're going to add them all up. And then we find the third group. So we have 5 minus 6 squared, plus 6 minus 6 squared, plus 7 minus 6 squared. And what is this going to equal? So this is going to be equal to, up here it's going to be 1 plus 0 plus 1.