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paralax/stddev.elm

Created May 25, 2015 16:39
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stddev in elm
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stddev.elm
import List
import String
average : List -> Float
average l = (l |> List.sum |> toFloat ) / (l|> List.length |> toFloat)
stddev : List -> Float
stddev l =
m = average l
sqrt((l |> List.map(\x -> x-m) |> List.map(\x -> x*x) |> List.sum)/(List.length l |> toFloat))
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