Why do people always think average penis size is 6 inches long?

I think you throw yourself into the discussion.

You have to go back to your class. You didn't understand it at all...

The level of confidence is NOT the probability in a normal distribution.
Usually researchers use a level of confidence of 95% ( in experiments in labs even 99% ).
This determines how big the sample size must be of a certain population to calculate the margin of error ( the confidence interval ).
With a sample size of 300 you have a small margin of error for a big population.
That will change only a bit if you increase it to 1000.
The most important factor is the selection of the sample of the population that you want to investigate. (representative)

Sir, I am sure you are right- I am truly a rank amateur when it comes to sadistics. I will stand facing the back corner, wearing my dunce cap. I do, however, contend that we do not have a true, normal distribution- it is skewed just a bit to the right. I am not smart enough to determine how this skewing affects SDs. Can you illuminate the audience?
 
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I suppose the perception of penis length is skewed the way that it is because so many people lie about their size. Look up the thread on here that asked who can show 8" measured. We had guys trying to stab themselves in their thoracic spine with the damn ruler talking about "bone pressed bro." Get the fuck out of here. You don't tailor your pants by shoving a tape measure up your ass for inseam length. I mean yeah technically your skeleton is not near your straddle, but that has nothing to do with your leg length. I shutter to think what would happen if these guys needed to measure their neck size for a shirt, would they suffocate?
 
I suppose the perception of penis length is skewed the way that it is because so many people lie about their size. Look up the thread on here that asked who can show 8" measured. We had guys trying to stab themselves in their thoracic spine with the damn ruler talking about "bone pressed bro." Get the fuck out of here. You don't tailor your pants by shoving a tape measure up your ass for inseam length. I mean yeah technically your skeleton is not near your straddle, but that has nothing to do with your leg length. I shutter to think what would happen if these guys needed to measure their neck size for a shirt, would they suffocate?


I had a girl one day swear I must be "packing 9 down there. Because you make my ex's 8 inches look small." What a said pathetic world we live in.
 
Sir, I am sure you are right- I am truly a rank amateur when it comes to sadistics. I will stand facing the back corner, wearing my dunce cap. I do, however, contend that we do not have a true, normal distribution- it is skewed just a bit to the right. I am not smart enough to determine how this skewing affects SDs. Can you illuminate the audience?
Almost all penis-studies shows a skewing to the right. But as you said - just by a bit.
But it stays a normal distribution with a skewing factor.
How it affects the SD depends on the sample data - but left or right means a bigger SD.
So the probability will increase the further from the mean.
Some studies will normalize the distribution by cutting on both sides the outliers. ( the min and max - or 2 min and 2 max, etc.. )

The most important factor stays the selection of the sample of the population that you want to investigate.

For example : The Cancun study ( Lifestyle )
Sample size : 300
Erect Lenght : average 5.877" (14.928 cm). SD 0.825" (2.096 cm).
Erect Girth : average 4.972" (12.63 cm). SD 0.508".

One interesting study.
Does it reflect the penis in the world? No - it's just an rough indication.
Why?
1. Only volunteers.
2. Young healthy students of +/- 20 of North America - No males of 30 or older.
3. A team was measuring - where they all using the same method - what was the measuring error?

But it reflects good a population of students in North America.
And a rough indication of the erect dimensions of a penis in general.
 
Not quite, although I see how you would take that meaning from my post. I am not saying it is not representative- I am saying we will never have a perfect understanding. An estimate is still an estimate. Yes, we can try our best to get a representative sample, but this is not perfect. How many hundreds of millions of men worldwide have not been sampled in various studies? I'm willing to guess quite a few. I reiterate my position- the current mean of 5.16" is probably very close to the truth, and I doubt the far right end of the range- there are more big guys than the standard deviations tell us.
Please.

Science can never measure all of something, yet you cannot deny that it produces valid results. In fact they measure exactly how seriously you should take the conclusions based on sample size and other factors.

All your objection proves is that science can never make an absolute truth claim, and everyone already knows this. This is why every conclusion is tentative, regarded with suspicion, and occasionally retested.
 
Please.

Science can never measure all of something, yet you cannot deny that it produces valid results. In fact they measure exactly how seriously you should take the conclusions based on sample size and other factors.

All your objection proves is that science can never make an absolute truth claim, and everyone already knows this. This is why every conclusion is tentative, regarded with suspicion, and occasionally retested.

I am a master of the obvious!
 
My penis is 17.5cm erect and I think I'm average.
 
Thank you for the compliment. It's just about 99% of the guys I've slept with have been around my size or bigger.
STUD,, I agree as I am a little over 19cm and have been with a lot of guys bigger or close to the same size, and sure smaller also! Bill
 
It's just one of those public misconceptions, like Luke, I am your father" or "Beam me up, Scotty".

It's wrong, but it's only slightly wrong so it persists.
 
I stick by my opinion that 6 is where average begins!

No, I'm not a woman or gay, and yes my evidence is anecdotal, but I simply don't believe below 6 is average. Primarily, my 'evidence' is based on the anecdotes of 3 women, all of whom I believe as they had no reason to lie; a gay friend who takes great pride in guessing his partners' penises correctly; one of my gf's good friends who is a male masseuse (bisexual), and my own experiences.

Both gfs with whom I've spoken to size about agreed that I was 'noticeably' smaller than all previous partners (I'm 5x5). My current gf has had only a few partners, but experienced huge, so maybe she's not the best exhibit. But my ex prided herself on having used men sexually just as they use women. She said she didn't have an issue with my size but there was no hiding the fact it was the smallest out of more partners than she could count. Her reckoning was that 6-6.5 is average, and also that average girth was marginally more than my 5.

My gay friend sings a similar tune, although he points out that although he's seen many under six, the vast majority are in the high fives to low sixes, with many more 6-8s than people would like to believe. He furthermore added that there are far less under-6s than over-6.5s.

My girlfriend's male masseuse friend told her 6 was a solid average, with less than 6 being less common than over 6. Under 5.5s were certainly out there, he said, but definitely not average or even fairly common.

This is all anecdotal and as such can be easily rebutted, but I nonetheless firmly believe it has merit. Calling the average 5 makes a lot more men feel good about themselves than otherwise would have, and who can possibly prove those stats wrong?
 
Then you aren't 17.5 cm. A properly measured penis nearly 7 inches long, especially if you're taking non-bone-pressed is nowhere even near average.

As I originally stated "I think I'm average"! I've had the same dick my entire life and it might be slightly bigger than average but to me it's still average if you compare it to some of the big ones on this site.
 
I stick by my opinion that 6 is where average begins!
I don't agree.
Average is certainly below 6".
I heard my whole life that I was big. Maybe because I'm a shower ( 5" or more limp ).
I'm not 7" erect, not even bone pressed as I've no fat pad (less than 0.25").
The topic real 8" proves it all. So many claims on this board, but in reality...
There are far more less than 6"-ers than above. And certainly for the US if I just take a glimp at the BMI-numbers for youngsters...
 
7.5-7.75" bone pressed and 6.5" not (I do have about 20 lbs to lose)...still can't see myself as big. I think part of it is also because I'm a shower at 5.25" not pressed flaccid (6.25-6.5" if pressed) so size-wise it doesn't seem to change that much when getting hard.

That said I don't agree with some of the posts here saying average is measured not pressed and BPEL is a complete lie. I'm not going to say it is all usable, but for size comparisons it does make the most sense. I gained about 10 lbs over the last 1-2 years, and my non pressed 'shrunk' by around 0.25" but that doesn't mean my penis got any smaller.
 
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I stick by my opinion that 6 is where average begins!

No, I'm not a woman or gay, and yes my evidence is anecdotal, but I simply don't believe below 6 is average. Primarily, my 'evidence' is based on the anecdotes of 3 women, all of whom I believe as they had no reason to lie; a gay friend who takes great pride in guessing his partners' penises correctly; one of my gf's good friends who is a male masseuse (bisexual), and my own experiences.

Both gfs with whom I've spoken to size about agreed that I was 'noticeably' smaller than all previous partners (I'm 5x5). My current gf has had only a few partners, but experienced huge, so maybe she's not the best exhibit. But my ex prided herself on having used men sexually just as they use women. She said she didn't have an issue with my size but there was no hiding the fact it was the smallest out of more partners than she could count. Her reckoning was that 6-6.5 is average, and also that average girth was marginally more than my 5.

My gay friend sings a similar tune, although he points out that although he's seen many under six, the vast majority are in the high fives to low sixes, with many more 6-8s than people would like to believe. He furthermore added that there are far less under-6s than over-6.5s.

My girlfriend's male masseuse friend told her 6 was a solid average, with less than 6 being less common than over 6. Under 5.5s were certainly out there, he said, but definitely not average or even fairly common.

This is all anecdotal and as such can be easily rebutted, but I nonetheless firmly believe it has merit. Calling the average 5 makes a lot more men feel good about themselves than otherwise would have, and who can possibly prove those stats wrong?

Disregards studies and relies on anecdotes. Strong logic.