But you might say, well, how do we know if R is a positive square root or the negative square root of that? R can take on values between negative one and positive one. And the answer is, you would look at the slope here. We have a positive slope, which tells us that R is going to be positive. If we had a negative slope, then we would take the negative square root. Now, this right here is the adjusted R squared. And we really don't have to worry about it too much when we're thinking about just bivariate data.