If the scores on a test have a mean of 26 and a standard deviation of 4, what is the z-score for a score of 18?
A)2
B)-1.41
C)-2
D)11

Name: If the scores on a test have a mean of 26 and a standard deviation of 4, what is the z-score for a score of 18? A)2 B)-1.41 C)-2 D)11
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Quizplus · Accepted Answer

The z-score is calculated by subtracting the mean from the score and then dividing by the standard deviation: $z = \frac{(18 - 26)}{4} = \frac{-8}{4} = -2$.

If the Scores on a Test Have a Mean of 26