短語詞組短語cumulative probability distribution function 累積概率分佈函數(shù)cpd cumulative probability distribution 累積概率分佈cumulative probability distribution fonction 累積機率分配函數(shù)cumulative distribution probability 累積分佈概率probability cumulative distribution 概率累積分佈probability cumulative distribution function 累積分佈函數(shù) 返回 cumulative probability distribution