Knowing that our software comes arunning  BDell says exactly the same thing I do but he gets away with it  he writes in far better English than I maybe why  Not wanting to get him in dutch with you boys to be sure but his stuff almost paraphrases mine  of course he probably never gets into the AIDS stuff  check out the average age of death for gays AIDS  or nonAIDS Why the  for nonAIDS  let Mastcell mull that one over  put his medical research phd to some good use Heyou might want to check out the  vs  statistical tests with one of your math friends there are a couple of competent ones here on wiki