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In a statistic class, 10 scores were randomly selected with the following results were obtained: 74, 73, 87, 57, 71, 68, 65, 77, 67, 66. What are the inner fences? What is the coefficient of variation?

  • statistics -

    Find the mean and standard deviation for your data. Once you calculate those two values, you can use the following formula to find the coefficient of variation:

    CV = (sd/mean) * 100
    ...where sd = standard deviation and * means to multiply.

    I hope this will help.

  • statistics -

    Note: CV is the standard deviation expressed as a percentage of the mean.

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