On Fri, Jun 10, 2016, at 21:45, Steven D'Aprano wrote:
> If you express your performances as speeds (as "calculations per 
> second") then the harmonic mean is the right way to average them.

That's true in so far as you get the same result as if you were to take
the arithmetic mean of the times and then converted from that to
calculations per second. Is there any other particular basis for
considering it "right"?
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