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Using the standard deviation formula,


what is the standard deviation of the following data?
You may find it helpful to duplicate this chart to perform your calculations:
    Table VII
    Urea Nitrogen Concentration in 9 Employees (mg/dL)

    Concentration
    (mg/dL)

    x-(x-)2
    10

    11

    11

    13

    9

    5

    15

    7

    9

    Total

Please select the single best answer