Wikipedia lähteiden mukaan:
"While results vary slightly across reputable studies, the consensus is that the mean human penis is in the range 12.915 cm (5.15.9 in) in length with a 95% confidence interval of (10.7 cm, 19.1 cm) or, equivalently (4.23 in, 7.53 in) that is, it is 95% certain that the true mean is at least 10.7 cm but not more than 19.1 cm.[5][6][7]"
vain 2,5%:lla on yli 19cm tai alle 10,7cm. Ja tietenkin yhtä usein pitää olla alle kuin yli, noin keskimäärin siis. Yleisimmin 13-15cm.
"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.[7][11]
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.[11][12]
In a study of eighty healthy males published in the September 1996 Journal of Urology an average erect penis length of 12.9 cm (5.1 in) was measured.[5] 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 (5.4 in) (measured by staff).[6] 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 review published in the 2007 issue of BJU International showed the average erect penis length to be 1416 cm (5.56.3 in) and girth to be 1213 cm (4.75.1 in). The paper compared results of twelve studies conducted on different populations in several countries. Various methods of measurements were included in the review.[9]
An Italian study of about 3,300 men concluded that stretched length was measured on average to about 12.5 centimetres (4.9 in). In addition, they also checked for correlations in a random subset of the sample consisting of 325 men. They found a few statistically significant Spearman's correlations: between flaccid length and height of 0.208, ?0.140 with weight, and ?0.238 with BMI, flaccid circumference and height 0.156, stretched length and height 0.221, weight ?0.136, BMI ?0.169. They also reported a few non-significant correlations.[13]
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Näissä tutkimuksissa 3/4:ssä keskipituudeksi saatiin 12,9-13,6cm. Yhdessä tutkimuksessa 14-16cm välille osui tulokset.
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Näiden perusteella näyttäisi, että YHDESSÄKÄÄN tutkimuksessa ei ole saatu yli 16cm keskipituuksia peniksille.
silti vaatii halon kokoisen mulkun..