https://www.bbc.co.uk/news/uk-england-leeds-63629222Leeds: Boy, 11, beats Hawking's Mensa score
I have not found a reliable source for Stephen Hawking's IQ (there probably isn't one) but a figure of 160 is bandied around, often hinting at a standard deviation of 15 (as per most current IQ tests). This would put him in the top 1/31560 of the population.Yusuf achieved 162 on the test, which is more than the late physicist and author Prof Stephen Hawking, who is believed to have achieved 160.
Mensa use the Cattell III B test which has a standard deviation of 24. 162 on this scale is in the top 1/204 of the population, and is equivalent to about 139 with an SD of 15 — well short of 160. Obviously, as Yusuf maxed out on this test, it is still possible that his IQ equals that of Stephen Hawking (or, rather, what it was when he was still alive) but it certainly cannot be inferred from what we are given.
Mensa also use the Cattell Culture Fair IIIA test which has a higher maximum score. Both tests are included in the price and are administered consecutively in the same session (source: https://www.mensa.org.uk/iq-booking) so, presumably, Yusuf took both. What was his other score?
The Cattell III B test actually goes higher than 161 (or 162 for kids) but Mensa only score it up to 161 (or 162). I am not sure of the reason for this, it could be that group administration does not allow extra credit for finishing early but that is a guess.
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