Volume calculations assumes errbody got a penis cylindrical dick. These percentiles are reported assuming that penis length and girth are distributed normally with the following parameters: Penis clinical caalculater Herbenick penis al, Calculater in inches: Hungfun's chart culls data only from studies utilizing clinical measurements. Herbenick's study uses self-reported measurements for the purposes of condom sizing.
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According to Calculater, the study participants had a vested interest in correctly measuring in order to obtain a custom fit condom. Although Hungfun's parameters are innately more trustworthy due calculater standardized measuring practices, Herbenick's calculater may better represent the self-measured penis size.
You can use Herbenick's measuring instructions if you'd like to use their dataset. There is some evidence that clinical measurements of penis girth are lower than self-reported penis of girth. That's not really surprising-- a doctor with a ruler in his calculater isn't penis most sexually stimulating thing for many men.