The z-score should be (51-mean)/sigma, which is negative.Originally Posted by kwtolley
RonL
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.