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Math Help - random variable sets

  1. #1
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    random variable sets

    for any set of real numbers x1, x2,...xn, show that the fraction of x1,...xn included in the interval (x(bar)-ks, x(bar)+ks) for k>=1, is at least 1-1/k^2. Here x(bar) is the sample mean and s is the sample standard deviation.
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  2. #2
    MHF Contributor matheagle's Avatar
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    This sounds like the discrete version of Chebyshev's \ne
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