But the difference is smaller than for the median black person and the median Jewish person. (I said "even just knowing what their job is would screen off much of it", not "all of it".)
The bell curve has both the mean and the deviation, you can have a 'race' with lower mean and larger standard deviation, and then you can e.g. filter by reliable accomplishment of some kind, such as solving some problem that smartest people in the world attempted and failed, you may end up with situation that the population with lower mean and larger standard deviation will have fewer people whom attain this, but those whom do, are on average smarter. Set bar even higher, and the population with lower mean and larger standard deviation has more people atta...
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