FERRORS / PERCNT(pp) NONE OWN STATISTIC THEORY Purpose Specify errors of experimental data to be fitted.
PERCNT(pp) Each data point has an y-error of pp percent of the y-value
No errors are known
Take errors associated with data points itself.
Assume statistical errors computed as square root of y-values
Errors are derived from the fit function as square root of the computed function y-values.