hello everyone, I don't know how to analysis my data. My statistical model is factorial in CRD, factor is 2 diets and 4 breeds. I would like to analyze marbling score. should i analyze by FRIEDMAN test or another? And how to know different between 2 of factor and interaction?  if you give me an example or SAS code, i will be too much appreciate.   there's my data diet breed Marbling 1 1 5 1 1 4 1 1 1 1 2 1 1 2 2 1 2 3 1 3 1 1 3 3 1 3 5 1 4 3 1 4 5 1 4 5 2 1 3 2 1 3 2 1 2 2 2 1 2 2 1 2 2 2 2 3 1 2 3 2 2 3 4 2 4 3 2 4 3 2 4 2 thank you for the answer ... View more