Hi
The uncertainty of a fitted parameter can be estimated from the confidence bounds obtained from the Curve Fitting Toolbox in MATLAB.
- The uncertainty of the parameter can be estimated from the half-width of the confidence interval, which is given by:Uncertainty = (Upper Bound - Lower Bound) / 2 where Upper Bound and Lower Bound are the upper and lower limits of the confidence interval, respectively.
Note that the uncertainty of a parameter depends on the quality and representativeness of the data, the validity of the model assumptions, and the appropriateness of the chosen model. Therefore, it is important to use good judgment and statistical expertise when interpreting the results.
I would suggest you to refer to the following Matlab link to evaluate your fit better :-
Hope this helps!
