| Normal intelligence falls within +/- 4 standard deviations of the bell curve, as all things in statisical analysis do. A 100 intellegence is defined as the average score of a high school graduate, the current drop in the knowege of a high school graduate may explain the sudden increase in people tested at 170+ IQs.
IQ itself is a logarithm multiplied by 100. Therefore if you take 1 and add the logrithmatic index and multiply by 100 you get IQ. 130 was originally defined as genius IQ because a person twice as smart as average works out to {[1+(log2)]*100}= 130.1 The system has now changed somewhat from that standard, but it is still a good general outline. When I graduate that is one of the things I need to re-research and figure out what they have changed...
EDIT: Almost forgot. Normal intelligence is therefore 100 +/- 25 points. (75-125)
EDIT again: I say my race because I am a member of the class... The same way my car is not General Motors, I am not my race. |