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正規分布

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#正規分布

  • 正規分布(ガウス分布)とは、左右対称な連続型の確率分布。
  • 正規分布は最も代表的な分布の一つ。例として、実験における測定誤差、テストの点数などは正規分布に従うことが多い。
  • また、コイン投げのように、反復思考の成功回数が従う確率分布も正規分布になる。

#正規分布の確率密度関数

f(x) = \frac{1}{\sqrt{2\pi}σ}e^{\frac{-(x-μ)^2}{2σ^2}} \\

正規分布の確率密度関数は、上記です。平均はμ、分散はσ^2です。

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