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# Thread: statistics, standard deviations, penis size and lies

1. ## statistics, standard deviations, penis size and lies

According to some surveys the average penis size is 5-7 inches. Usually high 5 inches is the conclusion when studied empirically (e.g. masters and johnson). However, for arguments sake I am going to go a bit further and give a very high average score, which i saw recently in a survey. The average in this data was 6.21 inches long, with a standard deviation of .77. Hence, 95% of the sizes were between 4.67 and 7.75 inches. That is, 95 out of every 100 people fell within one or two standard deviations away from the mean.

How is it therefore that everygirl has always seen one 10" or why is it so many people brag about how big theirs is. I think the whole issue is one of the most over-rated topics on this EARTH! And the reason why it exists is because of Western media and the bigger is better culture.

For statistical purposes and to highlight my argument, the odds of a girl who has slept with 3 guys, the odds of them all being over 7.75 inches are......

92, 6859.375

Got this using basic probability theory - 97.5x97.5x97.5

Does anyone else get my point.

2. I think this raises a new question in size perception and females. Are females bad at estimating size, or does thickness add some sort of visual illusion to an area of matters length.

Because ask 99% of girls if they have seen over 8 inches, and i gurantee more than 2/3 will say yes. That is less than even money returns if you were betting on that answer to be yes.

3. its simple, they'll ask the boyfriend or guys they know how big they are.. each guy will lie or will just measure from the bottom/wrongly. Plus they're just bad at estimating size because they dont have a dick? if you're above 6inches be happy, average is like 5-5.5

4. i was going to say the same thing about thickness

the sad part is about the guys ive heard about who only have a 2 or 3 incher

5. Originally Posted by troubled
i was going to say the same thing about thickness

the sad part is about the guys ive heard about who only have a 2 or 3 incher
LMAO thats true, for every 7.75 incher there is a <4.6 incher

6. some girl i know has seen more than one 8 inch plus penis... I just think girls are stupid or she just happenes to sleep with the top 1 percent of penis's in teh world lol

7. Originally Posted by heavy_lifter-
According to some surveys the average penis size is 5-7 inches. Usually high 5 inches is the conclusion when studied empirically (e.g. masters and johnson). However, for arguments sake I am going to go a bit further and give a very high average score, which i saw recently in a survey. The average in this data was 6.21 inches long, with a standard deviation of .77. Hence, 95% of the sizes were between 4.67 and 7.75 inches. That is, 95 out of every 100 people fell within one or two standard deviations away from the mean.

How is it therefore that everygirl has always seen one 10" or why is it so many people brag about how big theirs is. I think the whole issue is one of the most over-rated topics on this EARTH! And the reason why it exists is because of Western media and the bigger is better culture.

For statistical purposes and to highlight my argument, the odds of a girl who has slept with 3 guys, the odds of them all being over 7.75 inches are......

92, 6859.375

Got this using basic probability theory - 97.5x97.5x97.5

Does anyone else get my point.
I thought it was 3 std deviations roughly for 95% of all values...

and you should be using the compliments of the scores to get the probability:

0.025^3 x 100% = 0.0015625%

But yeah I see your point... the odds of this happening are ridiculously miniscule.

8. About 95% of the observations will fall within 2 standard deviations of the mean, which is the interval (-2,2) for the standard normal, and about 99.7% of the observations will fall within 3 standard deviations of the mean, which corresponds to the interval (-3,3) in this case.

http://www.stat.yale.edu/Courses/1997-98/101/normal.htm

9. Originally Posted by newz-
its simple, they'll ask the boyfriend or guys they know how big they are.. each guy will lie or will just measure from the bottom/wrongly.

so....were do you measure from exactly?

lol

10. Basically, what he's trying to say is that you're average, below average, or above average, but never big or small. Less than 5% of the test data fell within either 2 extremes of the data (smallest or biggest).

11. Originally Posted by heavy_lifter-
I think this raises a new question in size perception and females. Are females bad at estimating size, or does thickness add some sort of visual illusion to an area of matters length.

Because ask 99% of girls if they have seen over 8 inches, and i gurantee more than 2/3 will say yes. That is less than even money returns if you were betting on that answer to be yes.
Girls are pretty bad at estimating size. I've seen studies on this: each girl estimated her man's cock a full 2" larger than what it actually was.

12. I only posted this as I have seen a lot of anxiety recently by some individuals. There is nothing to worry about. You will find that in scientific reality the whole area is skewed with rubbish.

It's like you being 6 foot tall and feeling inadequate that you are not over 7 foot.

13. from what i understand, girls seem to be bad at approximating penis size and look at it 2" bigger than it really is.
girth makes your penis looks shorter - same with any object really, thickness makes things appear shorter.
as far as penis size goes, length seems to be very much overestimated - girth is a lot more important than length, seeing as the average vagina is only 5.5" long.

14. umm cant you reduce? and also the guys with bigger dicks probabyl bang a lot more chicks then the 3-5 inchers so your odds arent accurate. also dont forget about width!!!!! FTW!!

15. Originally Posted by ilikebeer
umm cant you reduce? and also the guys with bigger dicks probabyl bang a lot more chicks then the 3-5 inchers so your odds arent accurate. also dont forget about width!!!!! FTW!!
em, only 2.5% are below 4.6 inches. Not as if that represents a statistically significant amount to support what you are saying.

16. Depends on where you are measuring from

17. Originally Posted by heavy_lifter-
em, only 2.5% are below 4.6 inches. Not as if that represents a statistically significant amount to support what you are saying.
true. but i have a feeling there are guys 7+ who have more confidence and who probably banged a lot more girls than 6 inchers....just sayin

btw i am average

18. Originally Posted by hardestgainer
so....were do you measure from exactly?

lol
[no homo]top - end of tape touching not pushing the skin above. roll tape out and look straight down from the top [\no homo]

19. I remember along time ago reading maxim's survey results and having girls say the biggest they saw was 6"...

The problem is they don't measure, they guess and skew results, also everyone lies atleast a little bit concerning sex. I'm sure a girl fresh out of a relationship will underestimate the size of her last lover and one inside of a relationship will overestimate.

20. Girls dont really guess that well..... I mean im average size maybe a little bigger and everyone talks about how big I am and all this crap when in reality im not. I'm not complaining though.

21. then what the hell is this!
(no homo)

22. Originally Posted by heavy_lifter-
About 95% of the observations will fall within 2 standard deviations of the mean, which is the interval (-2,2) for the standard normal, and about 99.7% of the observations will fall within 3 standard deviations of the mean, which corresponds to the interval (-3,3) in this case.

http://www.stat.yale.edu/Courses/1997-98/101/normal.htm
wait...i'm no genius statistician, but doesn't this assume that penis sizes lie within a standard normal curve?? i'm pretty sure that race would keep the stats out of the normal curve (at least from what i've heard, average is different depending on race).

23. Originally Posted by heavy_lifter-
How is it therefore that everygirl has always seen one 10"
Same reason they find it hard to park a car.

They suck at judging lengths and distances.

24. Originally Posted by Jonathon
Same reason they find it hard to park a car.

They suck at judging lengths and distances.
LMAO!

25. Originally Posted by Fighterpilota10
then what the hell is this!
(no homo)
LMAO

26. Girls definitely over estimate.

My ex always told me I'm at least 7 or 8" when in reality I was only around 6 and a half (no homo)

...umm, I'm going to be that loser and admit I got into jelqing & I'm going to say... I'm up to a drop below 7"

so if any of you are really concerned.. check out cheekycherry.com

it actually got my confidence in bed up, too.

(no homo) x 100

27. ^ no loser, same story here though i havnt done it in a long while.. most the results have stuckround though, definately works

28. girls definetly overestimate...my ex guessed that i was around 9 inches haha..which is 2 inches too big...so they have no idea...i think many of them say theyve seen 8 inches at least...bc they think that sounds big...but beleievable to tell...in really NOT MANY at all are 8 +

29. Originally Posted by NuggzTheNinja
Girls are pretty bad at estimating size. I've seen studies on this: each girl estimated her man's cock a full 2" larger than what it actually was.
Girls aren't the only ones who can't visually measure well. Guys do this all the time also, and I'm talking about guys who should know better from experience.

30. Originally Posted by Jonathon
Same reason they find it hard to park a car.

They suck at judging lengths and distances.
lmfao reps

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