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- Dictionaryexpected value
noun
- 1. a predicted value of a variable, calculated as the sum of all possible values each multiplied by the probability of its occurrence.
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- Expected value
Long-run average value of a random variable
In probability theory, the expected value (also called expectation, expectancy, expectation operator, mathematical expectation, mean, expectation value, or first moment) is a generalization of the weighted average. Informally, the expected value is the arithmetic mean of the possible values a random variable can take, weighted by the probability of those outcomes. Wikipedia
