expected value 详细解释

expected value

期望值, 预期值

英英释义

名词 expected value:

the sum of the values of a random variable divided by the number of values

同义词：arithmetic mean, first moment, expectation

补充

expected valueexpected value英:[ɪkˈspektɪd] 美:[ɪkˈspɛktɪd]1.预待值,预期值

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