IQ tests are normed for a standard deviation of 15 points, not 10. (And I'll bet you knew that but got distracted by the '3' in 130. The "D'oh! Effect" -- a sid

IQ tests are normed for a standard deviation of 15 points, not 10. (And I'll bet you knew that but got distracted by the '3' in 130. The "D'oh! Effect" -- a side effect of our associative memory architectures.)