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Math Help - Standard Deviation

  1. #1
    Mad
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    Exclamation Standard Deviation

    The paper referenced in Exercise 4.25 also gave summary quantities for sodium content (in milligrams per kilogram) of chocolate pudding made from instant mix:

    2297
    2401
    2510
    2682
    2824
    3068
    3099
    3112
    3700
    3959

    a. Compute the mean, the standard deviation, and the interquartile range for sodium content of these chocolate puddings.


    I can compute the mean and the interquartile range but how do you find the standard deviation?
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  2. #2
    MHF Contributor

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    By using the definition of "standard deviation". If \mu is the mean, the standard deviation is \sqrt{\frac{\sum_{i=1}^n (x_i- \mu)^2}{n-1}}
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  3. #3
    Mad
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    Oiy, I know we didn't do that in class. Maybe we just used our calculators for that part, I can't remember, we're flying through everything so fast. But I don't know how to do it with just one set of numbers.


    EDIT: Nevermind, found it.
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