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    Expected Value

    Expected arithmetic average when an experiment is repeated many times. (Also called the mean). Notations: E ( x ) , μ . For a discrete random variable (RV) with probability distribution function P ( x ) , the definition can also be written in the form E ( x ) = μ = ∑ xP ( x ) .

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Source:  OpenStax, Collaborative statistics using spreadsheets. OpenStax CNX. Jan 05, 2016 Download for free at http://legacy.cnx.org/content/col11521/1.23
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