Originally Posted by Para-Goomba
:Anyway, for your length analysis, I don’t think this really matters much; the SD you cite seems similar to what I’ve seen in other studies. In your girth analysis above, however, I think that the tiny-girth outliers (obviously from men who self-measured diameter rather than circumference in the Kinsey survey) are increasing the SD, thus making small- and large-girth penises look more common than they actually are. I suspect that you’d find a normal distribution of girths in studies that did not involved self-measurement.
I agree, at first glance I would guess that the SD is too large. Thus thowing off the rarity of the very thick and the very thin.