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Also known as mathematical expectation, first moment, expected value, expectation value
long-run average value of a random variable
An expectation is the long-run average value you'd get if you repeated a random experiment many times and calculated the mean of all the outcomes. It matters because it tells you what to expect "on average" from uncertain situations, making it useful for decision-making and predicting typical outcomes.
AI-generated from the Wikipedia summary — may contain errors.
In the Vinony graph
Vinony's link graph records 1,167 inbound references to 기댓값, and connects out to probability theory, normal distribution and random variable.
It sits within the topics Expected utility, Gambling terminology and Theory of probability distributions.
Vinony links it to 57 Wikipedia language editions.
Wikidata facts
- Subclass of
- arithmetic mean
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- facet of
- expectation
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- maintained by WikiProject
- WikiProject Mathematics
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