Predicting extrapolated values and their errors
I have a data set where log(y) is a linear function of x when y is grouped by a nominal variable. X varies from 44 to 107. R2 Adj = 0.98. Y is a measured quantity and x is exact. I want to find:1. The predicted value of y when x = 0, and the associated uncertainty in this prediction (obviously I expect a significant degree of uncertainty as this would be extrapolating beyond my data set)2. The pre...