Another very comprehensive critique of 'national IQ' data has now been published as a preprint. It really is time for all papers which use these data to be retractedhttps://twitter.com/chrelli/status/1273620260793565184 …
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Or discuss the relevance of a shaky notion like the average in this context ?
Of all the things in science we could dispute, the issue of 'what is an average, anyway?' is pretty low on the list.
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The definition of an average is clear (mathematically clear). But the signification of an average is much less clear. Case in point: you can have the same average IQ but distributed differently. It is very probable it will lead to very different results.
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Fun fact: the question "what is an average anyways" (or more generally, how can we summarize a list of measurements) was the basis of the (rediscovery) of the normal distribution and a good chunk of (continuous) probability, led by astronomers. It's not as trivial as it seems.
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