期望值

• desired value
• expectation value
• value of expectation
• desired variable
• expected value
• expected number
• mathematical expectation
• expectation

参考释义

期望值

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例句

1. 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
   The expected value of a positive integral power of a random variable. The first moment is the mean of the distribution.