I'm trying to interpret a significant three-way interaction. Basically, I've used hierarchical regression to analyse my data, and I have come up with a significant three-way interaction.
My DV is continuous. My 3 IVs are continuous, categorical (2 levels), and another categorical (3 levels). My sample size is 194.
I know that I can do up graphs to eyeball the interactions, but I need a statistical method in order to figure out whether or not a slope is significant. I'm aware of Jeremy Dawson's template to figure out significant slope differences, but they only work for 3 continuous variables. Is there a method I can use to do this?
I've also had a read through the UCLA's SPSS guide to interpreting three-way interactions. Would this be the way to go?
Thanks in advance for any help you can provide.