It isn't the results which are significant - it's the IQ test - it was devised to sort out a particular set of Humans - presumably the ones which live in the same general type of neighbourhood as the devisers.

It was intended to quantify something fairly undefinable, but which the devisers understood to be something good.

When applied to different sets of Humans living in other areas, it probably simply shows how the test fails when applied to another culture.

All IQ tests show is how good someone is at doing IQ tests.

The only thing which is common to all humans is that we are all individuals - even identical twins, sharing the same DNA, can easily be distinguished by their pet dogs and cats.

Whatever the differences are, however thay are measured, the only true measure of intellegence or stupidity might just be how easily they can be fooled into thinking that there is a way to grade the quality of a person by having them do some sort of test.

Is that a paradox?