Hello I am doing some stats on some research I did and was having trouble picking the correct statistical tests to use.
The question I am trying to answer is, I have two cell types (I, II) and two treatments (M, WT). I would like to know how they compare to one another, specifically:
I-WT - control for I
I-M - does this still look like I-M?
II-WT - control for II
II-M - does this look more like II-WT or Is?
To answer this it was recommended that I use a two-way anova, however according to Shapiro-Wilk my data is not normal (p < 10e-06 for all features). Is there a recommended non-parametric test for comparisons between 4 groups?