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Switch to harmonic mean for aggregating speeds #1

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haphut opened this issue Feb 4, 2015 · 0 comments
Open

Switch to harmonic mean for aggregating speeds #1

haphut opened this issue Feb 4, 2015 · 0 comments

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@haphut
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haphut commented Feb 4, 2015

When the distance is fixed but the time spent traveling it varies, we are interested in the average time expressed in terms of speed. Wikipedia describes it in other words. So instead of mean(speeds), calculate 1 / mean(1 ./ speeds).
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