累計分佈函數

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任何隨機變數累計分佈函數cumulative distribution function,簡稱CDF)即係細過或等於參數概率。即係:

當中係代表累計分佈函數,而係概率。

喺連續分佈嘅情況底下,呢個函數係或然率分佈函數(PDF)由嘅積分。

生存函數累計分佈函數。

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