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stddev is the square-root of the variance #29

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merged 1 commit into from Feb 22, 2013
Merged

stddev is the square-root of the variance #29

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4 changes: 2 additions & 2 deletions lib/metriks/histogram.rb
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Expand Up @@ -63,7 +63,7 @@ def mean
end

def stddev
count > 0 ? variance : 0.0
count > 0 ? variance ** 0.5 : 0.0
end

def variance
Expand Down Expand Up @@ -109,4 +109,4 @@ def update_variance(value)
end
end
end
end
end