what changes when the Build Term(s) is changed from main effects to interaction? Why does the p-values of Temp and Catalyst change from 0.109 to 0.026 and 0.527 to 0.343 respectively? I understand why the new "Catalyst*Temp" shows up, because we asked for the interaction between those two variables. I just don't understand the change in the p-values for the two variables individually, please help
"suggests that there is no apparent difference" --It's important that he didn't simply say "no difference"
Thanks for very clear example and descriptions!!!
what changes when the Build Term(s) is changed from main effects to interaction? Why does the p-values of Temp and Catalyst change from 0.109 to 0.026 and 0.527 to 0.343 respectively? I understand why the new "Catalyst*Temp" shows up, because we asked for the interaction between those two variables. I just don't understand the change in the p-values for the two variables individually, please help
It is very helpful
Do you pay attention to the large values for the intercepts. I think it is telling you something about the fitness of your model.
Thank you so much!