First of all, i would like to say, almost all internet articles over-estimate the average size of the penis length in erect state. Averages and penis sizes are useless if the datasource does not provide the detailed methodology of measurement hat has been used to provide figures.
The results of the Kinsey institute penis size study are bogus:
Many times, the methodology description is either missing or partial. Many penis length studies are useless and shouldn’t be considered as serious data. For instance, The 1979 average penis length given by the Kinsey institute report shouldn’t be taken into account. The said research data have been self-reported by participants. It means each man could provided measurement that were not real during the research. Thus, data cannot be accurate.
The Wessells penis study is vague:
According to the Wessells study published in the 1996 US journal of Urology, the US average erect penis length is equal to 12.9 cm (5.09 inches) non-bone pressed. Unfortunately, The study abstract didn’t explain how the tape has been positioned to measure penises. Penis length can be tremendously different whether the tape is placed on the penis or next to the penis. In this circumstances, how can we compare a real-life penis to the Wessells study if we are not 100% sure of the measurement methodology?
The lifestyles condom study is partial:
The lifestyles condom average penis size is equal to 14.9 cm. Knowing that lifestyles condom measured students we can imagine that the lifestyle condom age range was from 20 to 30 years old. Methodology, table of records and penis length distribution charts have never been published by the lifestyle condom manufacturer Ansell. Every explanation seen on the internet are only speculations. Except the average size of the penis in erect state extracted from the Ansell company, everything you find on the internet regarding the said study methodology has no reference.