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statistics

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A set of 50 data values has a mean of 15 and a variance of 36.

Find the standard score of a data value = 30

  • statistics -

    Use z-scores.

    Formula:
    z = (x - mean)/sd

    Your data:
    x = 30
    mean = 15
    sd = square root of the variance

    I'll let you take it from here.

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