Hi! Thanks for such an informative tutorial.but I have some questions regarding ANOVA analysis.I performed DOE with 2 continuous and 1 categorial factors.but my lack of fit turned to undefined due to pure error ss is zero.can you please help me to the way how can I now test my fit of regression to be good???thanks in advance
Hi! Thanks for such an informative tutorial.but I have some questions regarding ANOVA analysis.I performed DOE with 2 continuous and 1 categorial factors.but my lack of fit turned to undefined due to pure error ss is zero.can you please help me to the way how can I now test my fit of regression to be good???thanks in advance