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Informally, the expected value is the mean of the possible values a random variable can take, weighted by the probability of those outcomes. Since it is obtained through arithmetic, the expected value sometimes may not even be included in the sample data set; it is not the value you would expect to get in reality.
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The value X can represent a single sample drawn from a single distribution or can represent a collection of samples drawn from a collection of distributions. If there are n samples and the corresponding n distributions are statistically independent then the Fisher information will necessarily be the sum of the single-sample Fisher information ...
In probability theory, the conditional expectation, conditional expected value, or conditional mean of a random variable is its expected value evaluated with respect to the conditional probability distribution. If the random variable can take on only a finite number of values, the "conditions" are that the variable can only take on a subset of ...
This page was last edited on 3 August 2007, at 19:27 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
The term sound effect dates back to the early days of radio. In its Year Book 1931 the BBC published a major article about "The Use of Sound Effects". It considers sound effects deeply linked with broadcasting and states: "It would be a great mistake to think of them as analogous to punctuation marks and accents in print.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Expectation_value&oldid=1035645425"This page was last edited on 26 July 2021, at 21:51 (UTC). (UTC).
Expected value of sample information, the expected increase in utility that a decision-maker could obtain from gaining access to a sample of additional observations before making a decision Expected value of including uncertainty , the expected difference in the value of a decision based on a probabilistic analysis versus a decision based on an ...