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Math Help - Can anyone help?

  1. #1
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  2. #2
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    Re: Can anyone help?

    Is your question

    Show that
    \sigma x^2=\sum \frac{x_i^2}{N}-\sum \frac{x_i}{N}

    Becomes
    \sigma x^2=(\sum \frac{x_i^2}{N})-\mu x

    All sums between i=1 and N
    Last edited by Shakarri; March 16th 2013 at 07:56 AM.
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  3. #3
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    Re: Can anyone help?

    Yup, any help?
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  4. #4
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    Re: Can anyone help?

    That doesn't make any sense because \sum \frac{x_i}{N} is \mu
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  5. #5
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    Re: Can anyone help?

    Joyeux
    There is something wrong with your formula
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