I think Average is a little smaller than the ruler shows. Isn't avg 5.1" to 5.3"?
I mean who the fuck really knows?
So many question marks and skews:
Bp/nbp? The measurer could be off. The erection could be weak. The volunteers could be volunteering because they are bigger. Pool could be irregular.
And what pool do you compare with?
World wide and all ages?
Something closer to your demographic?
Finally, are you measuring in the same fashion as they did in the study? Did you jelq for an hour first?
Are you wearing a cockring? Are you pushing the ruler through your skin? Is your erection level the same as the guys who were in the study?
I think I am more likely to volunteer for a study than a below average individual, where as big guys would be chomping at the bit.
When I measure I make sure my dick is maxed out and the ruler is pushed in nice and snug. In a study, I'd say the erection level may not be as good and the measurer will not measure with goal of getting the biggest number.
Pools of different demographics have produced varying numbers, compounding the issue more.
I would knock .25" off of my self-measured numbers to achieve consistency with a study where men were measured by someone else.
Then again, these men must volunteer, and I am fairly certain that bigger guys will skew the results to the bigger side because they are more likely to volunteer.
Whew.