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    mean and standard deviation

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    Given the following frequency distribution, find the mean, variance, and standard deviation.

    class frequency

    66-68 11

    69-71 22

    72-74 18

    75-77 5

    78-80 18

    © BrainMass Inc. brainmass.com June 4, 2020, 1:14 am ad1c9bdddf
    https://brainmass.com/statistics/quantative-analysis-of-data/calculating-mean-standard-deviation-387419

    Solution Summary

    This solution shows how to calculate the mean and the variance from a frequency table.

    $2.19

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