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  • Card 2 / 3:
    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. OpenStax CNX. Jul 03, 2012 Download for free at http://cnx.org/content/col10522/1.40
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