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anonymous

  • 5 years ago

Compute the standard deviation for the set of sample data 93, 83, 77, 77, 83 Round the answer to three decimal places.

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  1. anonymous
    • 5 years ago
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    find the variance and take the square root

  2. anonymous
    • 5 years ago
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    You find the mean: xbar Then you find the sum of the squared deviations: (93-xbar)^2+(83-xbar)^2+... Since this is sample data, we divide that sum by n-1 where n is the number of samples Then take the square root

  3. anonymous
    • 5 years ago
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    well better if i say n is the sample size i guess

  4. anonymous
    • 5 years ago
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    http://en.wikipedia.org/wiki/Computational_formula_for_the_variance

  5. anonymous
    • 5 years ago
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    Xavier is right, so the answer is 6.993

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