On Mon, 18 Aug 2014 06:39:42 -0700 (PDT), firstname.lastname@example.org wrote:
[snip, previous; later] > >Hi Rich, > >Thank you for your response. Sorry for the confusion I added by mentioning pairs of boys. For the actual problem with which we're dealing the adult brothers might be a better analogy.
Fine. If you don't have extraneous sources of variance, then the simple correlation is the full answer.
If it helps, consider that the R-squared is often called the "variance accounted for" by the relation.
No, I don't have any references on permutation, but the application *seems* straightforward to me.