This shows, that gradient calculation is either wrong in relax, or in minfx.
This is only for minimisation.
It is also easily to see on the graphs.
param: r2a_err, with err: 0.70912495, compared to MC: 0.10395753, with 500 boot 0.66165472
param: dw_err, with err: 0.56449802, compared to MC: 0.03708529, with 500 boot 0.00703459
param: k_AB_err, with err: 0.77161279, compared to MC: 0.29434628, with 500 boot 0.79263287
task #7824(https://gna.org/task/index.php?7824): Model parameter ERROR estimation from Jacobian and Co-variance matrix of dispersion models.