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    Re: What precision is required in cel nav?
    From: Francis Upchurch
    Date: 2015 Jul 19, 10:52 -0700

    Umh!

    John, re the stats

    I'm certainly no mathematician, but statistics I do know.(medical research).

    There are lots of problems with this. Very selective data ("cherry picking", we call it ) and fairly arbitary exclusion of "bad outliers" . This would never get past the FDA I can tell you that from 30 years experience. I very much doubt these data are worth the paper they are written on.

    Perhaps a professional statistician could give their opinion?

    Also, I assume all done on big ships? Not 30-40ft yachts? Umh.

    I personally do not believe a word of this. But happy to be corrected by those who know better!

    Best wishes

    Francis

     

       
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