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How many people worldwide are known to have the maximum possible Intelligence Quotient, which is 200?
Question
#82707. Asked by 24and48fan. (Jun 29 07 12:58 PM)
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miffy42

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I do. (possibly)
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Baloo55th
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The maximum (and any individual's score) depends on which test is being used. Some are closed scales, others not. And having both sat them and marked them, I don't really trust them. I've been told I clocked over 160 on one, and 'off the scale' on another (and unofficially that I had the highest IQ to go through my school - a very minor English public one - but there were many that got better exam results, but that might have been because I didn't work very hard). Can't tell you which - don't know by this time. Despite their best efforts, there is a lot of cultural baggage in many tests, and the actual intelligence may not always show in these tests. I quoted my 'measure' not to boast, but to show I'm not suffering from sour grapes due to a low result.
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zbeckabee

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Using the current world population of 6.5 billion -- the IQ of 200 being equivalent to 6.666 standard deviations above the mean -- one can easily derive that the expected number of persons having an I.Q. of 200+ to be .085 or less than 1/10th of a person (per normal distribution of I.Q. scores).
http://sci.tech-archive.net/Archive/sci.math/2006-06/msg00571.html
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