But either way, now that we've calculated it, we can actually figure out the total sum of squares. So let's do that. So it's going to be equal to 3 minus 4, the 4 is this 4 right over here, squared, plus 2 minus 4 squared, plus 1 minus 4 squared, now I'll do these guys over here in purple, plus 5 minus 4 squared, plus 3 minus 4 squared, plus 4 minus 4 squared, let me scroll over a little bit, plus 4 minus 4 squared, now we only have 3 left, plus 5 minus 4 squared, plus 6 minus 4 squared, plus 7 minus 4 squared. And what does this give us? Well up here, this first, so this is going to be equal to 3 minus 4, difference is 1, you square it, it's actually negative 1, but you square it, you get 1, plus, you get negative 2 squared is 4, plus negative 3 squared, negative 3 squared is 9. And then we have here in the magenta, 5 minus 4 is 1, squared is still 1, 3 minus 4 squared is 1, you square it again, you still get 1, 5 minus 4 is just a 0, well I'll just write the 0 there just to show you that we actually calculated that, and then we have these last 3 data points, 5 minus 4 squared, that's 1, 6 minus 4 squared, that is 4, that's 2 squared, and then plus 7 minus 4 is 3, squared is 9. So what's this going to be equal to?