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March 25, 2017

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If the mean of a set of data is 20.00 and 12.20 has a z-score of -1.30, then the standard deviation must be: What formula would you use to determine this?

  • Statistics - ,

    Z = (score-mean)/SD

    -1.3 = (12.2-20)/SD

    Solve for the SD.

  • Statistics - ,

    10.14

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