what is considered as an average size?
Average size...from this article:
http://en.wikipedia.org/wiki/Human_penis_size who's numbers are pretty close to these:
http://www.average-penis-size-chart.com/
Erect length
Several scientific studies have been performed on the erect length of the adult penis. Studies which have relied on self-measurement, including those from Internet surveys, consistently reported a higher average length than those which used medical or scientific methods to obtain measurements.[8][14]
The following staff-measured studies are each composed of different subgroups of the human population (i.e. specific age range and/or race; selection of those with sexual medical concerns or self-selection) which could cause a sample bias.[14][15]
A study published in the September 1996 Journal of Urology concluded that average erect length was 12.9 cm (5.08 in) (measured by staff).[6] The purpose of the study was to “provide guidelines of penile length and circumference to assist in counseling patients considering penile augmentation.” Erection was pharmacologically induced in 80 physically normal American men (varying ethnicity, average age 54). It was concluded: “Neither patient age nor size of the flaccid penis accurately predicted erectile length.”
A study published in the December 2000 International Journal of Impotence Research found that average erect penis length in 50 Jewish Caucasian males was 13.6 cm (5.35 in) (measured by staff).[7] Quote: "The aim of this prospective study was to identify clinical and engineering parameters of the flaccid penis for prediction of penile size during erection." Erection was pharmacologically induced in 50 Jewish Caucasian patients who had been evaluated for erectile dysfunction (average age 47±14y). Patients with penis abnormalities or whose ED could be attributed to more than one psychological origin were omitted from the study.
A study conducted by LifeStyles Condoms found an average of 14.9 cm (5.9 in) with a standard deviation of 2.1 cm (0.8 in) (measured by staff).[8] The purpose of this study was to ensure properly sized condoms were available.
A review published in 2007 issue of BJU Internetional, have shown that average erect penis length is 14–16 cm and its girth is 12–13 cm. This paper compares results of twelve studies conducted on different populations in several countries.[13]
An Italian study of about 3,300 Italian men concluded that stretched length was measured on average to about 5 inches. In addition, a correlation between weight and height and penis length was also found. However this was done only on 500 men with a small correlation value.[16]
Erect circumference
The Cancún LifeStyle study, in which the circumference of the shaft was measured at three points (base, mid-shaft, and just below the head) and then averaged, found an average of 12.63 cm (4.972 inches) with a standard deviation of 1.3 cm (0.5 in).[8]
Similar results exist regarding studies of the circumference of the adult fully erect penis, with the measurement taken mid-shaft.[citation needed] As with length, studies that relied on self-measurement consistently reported a significantly higher average than those with staff measuring.
So boiled down...5.3- 5.9 inches long and 4.5 - 5 inches in circumference...
Have fun,
Jman
