No, I think his example of 5 ethnic groups is flawed, because he’s using the wrong metric to calculate the average. If he was using the median instead of the mean—which is the right thing to do in this case—he’d obtain the result that “most blacks have average intelligence”, and his conclusion would no longer follow.
But then I have to consider the scenario where the median gives the result of below averge intelligence - will take me slightly longer to puzzle out in my head.
No, I think his example of 5 ethnic groups is flawed, because he’s using the wrong metric to calculate the average. If he was using the median instead of the mean—which is the right thing to do in this case—he’d obtain the result that “most blacks have average intelligence”, and his conclusion would no longer follow.
(Edited: typo)
The 5 ethnic groups was mine originally.
But then I have to consider the scenario where the median gives the result of below averge intelligence - will take me slightly longer to puzzle out in my head.