Heh. Of course being a non-linear transformation, bias will creep in if you just naively take the non-biased value, but people rarely think about that. Thanks

Heh. Of course being a non-linear transformation, bias will creep in if you just naively take the non-biased value, but people rarely think about that. Thanks for pointing this out. (BTW, the link needs an apostrophe: http://en.wikipedia.org/wiki/Bessel%27s_correction http://en.wikipedia.org/wiki/Bessel%27s_correction )