# What should I do when found no interaction in two way ANOVA (2x2) but I have both significant main effects of factors!!

I ran a two way ANOVA to find effect of interaction between drug and food on size of plant. I found no significant interaction but both drug and food were significant, Now, should I switch to type II ss and just report F? or perform t-tests (as each factor has two levels)? please guide me on this

• The interaction test is the same for Type II and Type III sums of squares. – David Lane Feb 28 '17 at 22:30

• You could plot a main effects plot and an interactions plot. The interactions plot would simply confirm the results which were already statistically determined. – Tavrock Feb 23 '17 at 8:50