I have data on 2 histone marks that influence chromatin density. I have calculated individual correlation scores using the cor.test() function in R for both. I would like to combine the 2 together to get a combined correlation score but I'm not sure what the best method to do this is. Can I just add the data for the 2 together and get a score with cor.test()?
the method of combining the two variables would be informed by some understanding of the markers, ie what is it that the combined measure is meant to characterise? maybe you want to take zscores and then sum or average them, at least that has appeared in the literature in other contexts, so perhaps there is a precedent to refer to