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March 30, 2017

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The distribution score for a city wide math test scores results in a mean of 70 and a standard deviation of 12. What score is 2 standard deviations above the mean?

  • statistics - ,

    94

  • statistics - ,

    Z = (score-mean)/SD

    For 2 SD above the mean, Z = +2. Insert the values into the equation and solve for the score.

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    Question 2
    Marks: --/1 Let data set #2: X=1, 3, 4, 6, 7, 45, 1. Compute the mean of this sample. Round to the hundredth.

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