jamovi

I feel like I must be overlooking something obvious, but I'm doing a regression and I have a variable (group) with 3 levels. In the model coefficients, it shows a comparison of group 2-1 and group 3-1, but not group 3-2. Can you tell me why I don't need that comparison or, if I do, how to get it? Thanks very much.

PS-Jamovi is great. It would be a pain to try to use SPSS remotely.

yeah, unfortunately i think the answer is "that's just how linear models work".

you have a reference level, and everything is compared to that reference level.

you could do an ANOVA and perform post-hoc tests, if that's the sort of testing you're wanting to do.

i'm not really an expert here, so hopefully someone else will chime in.

jonathon

Jonathon,

Thanks very much for your fast reply. (I'm used to using ANOVA, so I just expected it would be the same, but now I see your point.) Actually, now that I know there's nothing wrong, I think I can work with that. Thank you again for creating Jamovi!

Doug