math

Find the standard deviation for the data. Round your answer to one more decimal place than the original data.
{15,13,31,42,58,78}

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asked by David
  1. Find the mean first = sum of scores/number of scores

    Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

    Standard deviation = square root of variance

    I'll let you do the calculations.

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    posted by PsyDAG

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