In a distribution with σ = 20,a score that is below the mean by 10 points will have a z-score of z = 0.50.

Name: In a distribution with σ = 20,a score that is below the mean by 10 points will have a z-score of z = 0.50.
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Quizplus · Accepted Answer

A score that is below the mean by 10 points has a z-score of -0.5, not 0.5. The formula for z-score is z = (X - μ) / σ, so in this case z = (-10 - 0) / 20 = -0.5.

In a Distribution with σ = 20,a Score That Is