I have some variables (all metric), most of them normally distributed but two are definitely not (gamma distributed). I now would like to compute Spearman (or Kendall) coefficient for this correlations. For the others I´d like to compute Pearson-correlations.
Now my question. Are these coefficients directly comparable? And do you know of References to cite for this? Maybe there are some significant tests for comparing these. But I couldn´t find them so far.
I hope someone can help me with these.
Thank!