It's now figuring out the squared distance from the line using what the line would predict and using the y value, this one. And then it does the same thing over here. It figures out the squared distance of this y value from the mean. So what is the total squared error with the line? So let me just sum this up. The total squared error with the line is 2.73. And then the total variation from the mean, the squared distances from the mean of the y are 22.75.