nag_zggglm (f08zpc) Example Program Results Weighted least squares solution ( -0.9846, 1.9950) ( 3.9929, -4.9748) ( -3.0026, 0.9994) Residual vector ( 1.26e-04, -4.66e-04) ( 1.11e-03, -8.61e-04) ( 3.84e-03, -1.82e-03) ( 2.03e-03, 3.02e-03) Square root of the residual sum of squares 5.79e-03