# three-way anova

1. ### Three-Way (2x2x2) Between-Subjects ANOVA in SPSS

I'm just wondering how I can decompose a significant 3-way interaction in SPSS (all three IVs are categorical) without splitting the file, so that my follow up degrees of freedoms in the follow up tests remain the same as the omnibus degrees of freedom?
2. ### 3-way ANOVA with unequal sample sizes (between-groups)

Dear smart people, I am currently finishing my Master's in International Business Communication and have run into a problem with my data. I was wondering if you guys could maybe offer me some guidance on how to proceed? For my research, I did the following experiment: In a...
3. ### What follow-up tests for 3-way repeated measures ANOVA with no 3-way interaction?

For a three-way repeated measures ANOVA: Do I use simple main effects syntax or just run t-tests in SPSS in my follow up analyses (pairwise comparisons?) for a non-significant three-way interaction, with 1 significant 2-way, and 3 significant main effects? I'm interested not just in the...
4. ### Three-way ANOVA interaction: Post-Hoc tests

Hi There, I have a 2x3x4 repeated measured anova. I have a significant 3-way interaction, and I want to make sure that I am using the correct post hoc comparisons and not violating any key statistics theory. If we consider my 2x3x4 RM ANOVA to be AxBxC. With the significant 3-way interaction...
5. ### •Comparing groups - which test should I use（t-test or ANOVA)

The general infomation is: We have 6 kinds of material and have 4 group for each material now(please see the attached table) we cut one tooth to two halves(A and B) and bonded two composite cylinder to each half(cylinder 1 and 2). half A is control group(just following the normal bonding...
6. ### t-tests after three-way ANOVA?

Hi all, I've just run a three-way ANOVA on my data (3 IVs, 1 DV). I've got some main effects, as well as a three-way interaction effect. Am I supposed to run t-tests after the ANOVA in order to work out where the significant interaction effect is stemming from? Thanks