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[–]DragonerneJesus is white 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

Even if IQ tests did have 20% variation among the same participants, that doesn't mean that different groups of people have the same average IQ.

Think about two dices. One going from 1 to 6 and another going from 2 to 10. Both have very high variance, but the second have a much higher average.

He is just a very low iq individual.