I need some advice on how to proceed with my data analysis. I have 3 groups (Archaea, Bacteria and Eukarya). Each group has unequal number of individual species (70, 651, and 244 respectively). Each specie was given 7 different treatments (A, B, C, D, E, F, and G) and I counted the number of domains (you can call it 'y').
Now the problems are: Counts for treatment A are extremely high compared to counts of other treatments. Treatment G has the lowest counts. Other treatments have more or less similar counts. Data is non-normal, does not have homogenous variances, unequally replicated and any help would be appreciated.
- Which test should I use?
- Any transformation?