26 lines
540 B
Elixir
26 lines
540 B
Elixir
defmodule Growth.Calc.Centile do
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@moduledoc """
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measures =
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[
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[30, -1.7862, 16.9392, 0.1107],
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[14, -1.3592, 20.4951, 0.12579],
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[19, -1.6318, 16.049, 0.10038]
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]
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Enum.map(measures, &apply(Growth.Calc.Centile, :compute, &1))
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"""
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alias Growth.Calc.ZScore
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# TODO: (jpd) add documentation and typespecs
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def compute(y, l, m, s) do
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zscore = ZScore.raw(y, l, m, s)
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if -3 <= zscore and zscore <= 3 do
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m * :math.pow(1 + l * s * zscore, 1 / l)
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else
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:na
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end
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end
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end
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