It depends but I think that Duke (explore) targets the 95th percentile so 80th percentile of that would be the top fifth of the top 5%, i.e, the 99th percentile of the general population

I am not 100% certain of that 95%'tile bit, however, as I do not entirely recall where or when I saw it anymore.

Last edited by madeinuk; 03/18/15 06:32 PM.
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