I have what is probably a really stupid stats question but don't know where else to go, so I'm going to look stupid and hope someone can help me. So I'm in this research methods class where we basically made up fake data and ran it in SPSS, and now I have to write a presentation/paper on it. The problem is that we didn't really get into post hoc analysis during the course, and I need it to interpret the data. I have a mixed 2x4 design, where I'm comparing 4 groups on 2 conditions. I got significant main effects for group and condition, as well as an interaction of group*condition. At the last minute, my instructor ran a Tukey HSD which shows me the difference between the four groups. What I need to know is the post hoc analysis of the 2 conditions -- ie, on one condition, how are the four groups different? Does that make sense? Can I run a one-way ANOVA between groups for each of my 2 conditions separately and then get the Tukey HSD for each condition? I apologize if this is really dumb, I'm just trying to figure out how to do something I haven't been taught and was hoping I'm on the right track. Anyone? Thank you!