Investigating interaction in 3 way ANOVA that violates homogeneity

pablowickham

Hi,

I am trying to analyze my data using a 2 X 2 X 2 ANOVA but it failed the Levene's test of homogeneity. I proceeded to use the Kruskal-Wallis Test to check for statistical significance of each factor (and found them to be significant) then ran both the Dunn and Games-Howell Post Hoc Comparisons. These reported the significance within each level but shows no interaction between factors. How can I evaluate this in JASP? Is this even possible? And did I follow the correct steps?

Thanks in advance for your help!

Wickham ANOVA.pdf

EJ

Well, those options do seem to be there. Did you find anything missing?

E.J.

andersony3k

Are you sure that checking for statistical significance of each factor and running both the Dunn and Games-Howell Post Hoc Comparisons are relevant to the question of whether there's an "interaction?"