Data fitting\examp08_01.xls ............\examp08_02.xls ............\examp08_03.xls ............\example08_01_reglm.m ............\example08_01_regress.m ............\example08_01_robustfit.m ............\example08_02_nlinfit.m ............\example08_03_reglm.m ............\example08_03_stepwise.m ............\HeadCir1.m ............\reglm.m Data fitting