Inspired by some conversations that I've had, and curious to know just how likely it is that a guy is telling me the truth when he says, "I've met x guys over 10 inches," I looked into the stats to see what the numbers actually say about the frequency of different sized cocks among men. Before I explain my results, I want to come clean about some assumptions that I make. There are three. 1. Human penis length follows a normal distribution. Click here if you don't understand what a normal distribution is: Normal distribution - Wikipedia, the free encyclopedia 2. The mean (average) length of the human penis is 5.9". 3. The standard deviation of the human penis is 0.8". Click here if you don't understand what a standard deviation is: Standard deviation - Wikipedia, the free encyclopedia All my assumptions are, of course suspect, but I think that I will be criticised mostly on the basis of the 2nd and 3rd ones. I got the data from the following source: ansell - education I'm rather inclined to think that the data is reasonably accurate. That is, it's initially plausible, and probably close enough to reality to draw some interesting conclusions from. I'm not suggesting that the data is perfect, but it's probably good enough that we can learn something from it. This is the only study I've seen where the results are not self-reported. I'm likely to be criticised because there is a sampling error inherent in the test, in that perhaps guys with bigger dicks might be inclined to volunteer. I'm willing to accept that criticism, and say that the real average might be lower than the one given by this study. I've made a spreadsheet indicating what it actually means for there to be a normally distributed variable with a mean of 5.9" and a standard deviation of 0.8", which I have attached to this post. I will explain each of the columns by reference to one example row, the 7.00" row. The second column, "Probability" indicates the area under a standard normal curve to the left of the size in question. It tells you the proportion of the population that is likely to be below the indicated size. So, a 7.00" dick would most likely be bigger than 91.5% of a randomly selected group of guys. The next column indicates what proportion of guys would have dicks in the 7.00" to 7.25" range. The "This is a '1 in x' size" column tells us that 7.00" (for example) is a "1 in 12" cock. The "Number in a group of the given size" is just the "Differences in area" column multiplied by 6.7 billion. So one would expect to find 130,020,526 guys between 7.00" and 7.25" in a group of 6.7 billion people (half of them, men). The last column is the one that is most interesting to me. A 7.00" cock is the same number of standard deviations away from the mean as a 6-0 (72") tall man's height is away from the mean height for men. This means that you probably know as many guys with 7.00" dicks (or longer) as you know guys who are 6-0 tall (or taller). Of course, I'm not claiming that this is the absolute truth, but I am saying that this study, as inadequate as I'm sure it is, is better than a lot of other studies on the subject. And it is certainly a better indicator of how many cocks of different sizes there are than the subjective impression that most of us have from seeing pictures on LPSG, Monstercocktube.com or from the claims of guys in the chat room. I think there's reason for us to treat the claim that someone has a 10" dick with as much suspicion as if he claimed that he was 6-11 tall. Your thoughts?