But what is the proportion of people with an IQ of 130 or more? We...

can calculate this, because we know that 95.44% of the population have IQs between 70 and 130. This leans only 4.56% of population, of which half (2.28%) will have an IQ of 130 or greater (the other half — also 2.28% — will, of course, have an IQ of 70 or less). So only 2.28% of the population will have an IQ of 130 or more.

By Anonymous on General,