Hi,
I cannot find stats.sfit function. So, I am giving general sfit function related to curve fitting overview.
Fit function : fits curve or surface to data
So, fit function will return surface object or curve object. Here surface object is considered as sfit.
confint funtion: Confidence intervals for fit coefficients of cfit or sfit object.
confint(sfit) returns 95% confidence bounds.for sfit or cfit object.
Refer to this documents for better understanding :
So, sfit is not totally related to goodness of fit. MATLAB has function
goodnessOfFit which you can use.
goodnessOfFit : returns fit values that represent the error norm between test and reference data sets.
Refer to this document and example for better understanding :
