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Math Help - IS this the mean value of 2 functions?

  1. #1
    Junior Member
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    IS this the mean value of 2 functions?

    Hello everyone.
    In this ImageShack® - Online Photo and Video Hosting picture two lines before the end there is an equation with E{...}=E{...}=0.

    For me this refers to the Expected Value of the two functions. What is the physical interpretation when two functions have an expected value of zero?

    I would like to thank u in advance for your help

    Best Regards
    Alex
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  2. #2
    MHF Contributor matheagle's Avatar
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    The expected value of the product is zero, which I assume the separate means are centered too?
    If so then they have covariance zero, i.e., they are uncorrelated.
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