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Math Help - Variance

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    Variance

    a set of data consists of four numbers.Given that sigma x=12k and sigma x^2=100.express the variance in term of k..
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    Quote Originally Posted by mastermin346 View Post
    a set of data consists of four numbers.Given that sigma x=12k and sigma x^2=100.express the variance in term of k..
    Do you know the formula for variance?
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