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by globalnode 15 days ago
not really understanding why the SD graph for the year drops below zero at some points.
1 comments
mrkeen 15 days ago
It needs to by mathematical definition. Half of everything is below average.

(Ignoring the complaints of others that they didn't calculate the mean from the whole graph).

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globalnode 13 days ago
bit of a late reply, but yeah it makes sense if its z scores and not standard deviations
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