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I think mentioning "half" here was just an exaggeration to make a point.

On a related note, I think it is perfectly possible that 70 % of all drivers are "better than average". It's a mathematical tautology that only 50 % are better than median, but the distribution of driver skill does not need to be a symmetric distribution, so median and average can be significantly different.

With things like IQ, the distribution is symmetrical by definition.

I was taught at school that "mean", "median" & "mode" were different averages.

Oh how we all love ambiguity in language!

Yes, sure. I'm not native English speaker but I think also in English, in colloquial use "average" is the same as "arithmetic mean".

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