In response to message posted by Kirk:

This is where an engineer comes in handy. We use "3 sigma design" which means you capture 95% with +/- 3 sigma. I believe the std deviation on an IQ test is supposed to be 10 so 130 is 3 std deviations (not deviants ras!) above the norm so 2.5% of the population should have an IQ above 130. Quality Circle type design shoots for siz sigman and I think that is 99.x% but I forget the exact amount. In reality, I think an IQ above 160 is very rare

Kirk, just to be pedantic (and show off a bit).
1 Sigma > 67%, 2 Sigma > 95%, 3 Sigma >99.7%, 6 Sigma = Marketing Bullchit.

Standard deviation on the Stanford Binet IQ test is 16, so 116 = 1 Sigma, 132 = 2 Sigma, 148 = 3 Sigma.

There are an equal number of potential brinkerbots below 100 to balance off the smart people above IQ 100. So, by the numbers, (100-67)/2=16.5% of the population has an IQ over 116, (100-95)/2 = 2.5% is over 132 and (100-99.7)/2= 0.15% is over 148.

Tested IQ, however, isn't a pure Gausian distribution, and there are a more people that test above 148 than the theoretical 0.15%. It's actually closer to 1% and often refered to as being >99th percentile. Also, IIRC, above IQ 132 is actually closer to 2% of the population. IQ 132 will also get you in Mensa which requires you must be in the top 2% to join.

Of course, the important thing isn't a persons IQ, it's what they do with what they have. It never hurts to have more to work with than Joe Average.

I have read that on a "culturally unbiased". chimpanzes are about IQ 70 compared to IQ 100 for humans. That means that a chimpanzee is just under 2 standard deviations below an average human, and that a human with an IQ of 132 is further above the average human than a chimpanze is below the average human.