On 3:54 am -0500 thechat-request at lists.evolt.org wrote: >I know some male nurses, and my late wife, an RN, told me they were good, >but they're still statistical outliers. YOU CAN'T HAVE OUTLIERS IN A TWO-VALUE CLASSIFICATION SYSTEM. Male nurses may be rare, but they're not outliers. :-) Dave, who has become a bit of a data facist in his old[er...] age. PS Sample chapters ["Corrupt Techniques in Evidence Presentations"] from Tufte's new book are here: <http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=0001et&topic_id=1&topic=> -- ----------------------------------------------------- Dave Fitch, <http://www.dere-street.com/>