How to find best fit values for a and b in following function y=1-exp((-x/a)^b) to fit data points
I have data, I'd like to find the values of a and b in the following function that best fits the data: y=1-exp((-x/a)^b). I'd also like to fit y=1-exp(-x/a) to see which function has the better fit. Is there a way to do this? I'm using JMP 14.Relaxation function vs hours annealed in attached file.
MAS
vince_faller