random variable

汉语翻译

英语解释：

名词 random variable:

1. a variable quantity that is random
   同义词：variate, variant, stochastic variable, chance variable

例句：

1. The expected value of a positive integral power of a random variable. The first moment is the mean of the distribution.
   矩，动差任意变量的正整数功效的期望值。第一个矩是分配的平均数