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IEVref: | 192-13-03 | ID: | |

Language: | en | Status: Standard | |

Term: | expectation, <of a random variable> | ||

Synonym1: | mean, <of a random variable> | ||

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Definition: | 1) for a discrete random variable X taking the values x with the probabilities _{i}p, the sum _{i}E(X) = ∑_{i}p extended to all values _{i}x_{i}x which can be taken by _{i}X 2) for a continuous random variable | ||

Publication date: | 2015-02 | ||

Source: | IEC 60050-103:2009, 103-08-10 | ||

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2) for a continuous random variable *X* having the probability density function *f*(*x*), the value of the integral *E*(*X*) = ∫*xf(x)*d*x*