| 单词 | mathematical expectation |
| 释义 | mathematical expectation 1. Math. the product of the probability of the occurrence of an event and the value associated with the occurrence of a given event. 2. Statistics. the summation or integration, over all values of a variate, of the product of the variate and its probability or its probability density. Also called expectation, expected value. [1830-40] |
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