For Pearson correlation coefficients, it is generally appropriate to transform the r values using a Fischer z transformation. Then average the z-values and convert the average back to an r value.

I imagine it would be fine for a Spearman coefficient as well.

Here's a paper and the wikipedia entry.

For Pearson correlation coefficients, it is generally appropriate to transform the r values using a Fisher z transformation. Then average the z-values and convert the average back to an r value.

I imagine it would be fine for a Spearman coefficient as well.

Here's a paper and the wikipedia entry.