First time poster, and I have what might be an odd question. In a typical regression analysis (y = mx + b), we have a set of known x’s and known y’s. If we try to predict y using a value outside the range of known x’s, the result is considered an extrapolated value. However, what if we predict y with a value of x that is within the known range, but because of a quirk in the regression line, the predicted value of y is outside the range of the known y values? Is this also considered an extrapolated value?

Thanks much.

JC