And if you wanted to visualize that, one standard deviation of the residuals below the line would look like this. And one standard deviation above the line for any given x value would go one standard deviation of the residuals above it. It would look something like that. And this is obviously just a hand-drawn approximation. But you do see that this does seem to be roughly indicative of the typical residual. Now it's worth noting, sometimes people will say it's the average residual. And it depends how you think about the word average.