4. 累積分佈函數(Cumulative Distribution Function, CDF)可用於描述隨機變數的機率分佈特性,其數學定義為下列何者?
(A)機率密度函數(Probability Density Function, PDF)的平均值;
(B)機率密度函數(Probability Density Function, PDF)的積分;
(C)機率密度函數(Probability Density Function, PDF)的離散總和;
(D)機率密度函數(Probability Density Function, PDF)的標準差

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統計: A(0), B(2), C(0), D(0), E(0) #3773807