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Math Help - set of scores, check answer please

  1. #1
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    Question set of scores, check answer please

    For a set of scores the mean is 60 and 0 σ = 6. The z-score for the score 51 is.

    60-51=9
    9/6=1.5. 1.5 is my answer is this right. list of possible answers are -

    1. 3.0
    2. 1.5
    3. -1.5
    4. 9.0
    thanks for checking my answer.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by kwtolley
    For a set of scores the mean is 60 and 0 σ = 6. The z-score for the score 51 is.

    60-51=9
    9/6=1.5. 1.5 is my answer is this right. list of possible answers are -

    1. 3.0
    2. 1.5
    3. -1.5
    4. 9.0
    thanks for checking my answer.
    The z-score should be (51-mean)/sigma, which is negative.

    RonL
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  3. #3
    Member
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    thanks

    Ok I see what happen, thanks for checking my answer.
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