Thanks Spencer!
That's what I was looking for. My data are not at all normal and neither are
the transformed values because The majority are at an upper limit that is not
1 (these are grouped data abstracted from a paper). There's nothing that can
be done about that, but it was good to compare
1. If none of the numbers are 0 or 1, I might try a logit
transformation log(p/(1-p)). Then I'd make a normal probability plot of
the transformed variables to check the transformation. If that seemed
OK., then I'd do the computations on logit space and back transform the
result.
2. I
