In a distribution where X = 21 and S = 3, what is the Z score of a raw score of 15?
A)−12
B)−2
C)2
D)12

Name: In a distribution where X = 21 and S = 3, what is the Z score of a raw score of 15? A)−12 B)−2 C)2 D)12
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Quizplus · Accepted Answer

The Z score is calculated using the formula Z = (X - μ) / σ, where X is the raw score, μ is the mean, and σ is the standard deviation. Substituting the given values: Z = (15 - 21) / 3 = -6 / 3 = -2.

In a Distribution Where X = 21 and S =