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Cumulative standard deviation: Difference between revisions

Cumulative standard deviation (view source)

Revision as of 23:03, 11 August 2010

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Uses an object to keep state.
 
"Simplification of the formula [...] for standard deviation [...] can be memorized as taking the square root of (the average of the squares less the square of the average)." [[httpwp://en.wikipedia.org/wiki/Standard_deviation#Simplification_of_the_formula|c.f. 1wikipedia]].
 
<lang ruby>class StdDevAccumulator
Retrieved from "https://rosettacode.org/wiki/Special:MobileDiff/116367"
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