Suppose a group of scores has a mean of 40 and a standard deviation of 10. A score of 80 would equate to a standard score of
A) 1.0
B) 2.0
C) 4.0
D) 8.0

Name: Suppose a group of scores has a mean of 40 and a standard deviation of 10. A score of 80 would equate to a standard score of A) 1.0 B) 2.0 C) 4.0 D) 8.0
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Question

Quizplus · Accepted Answer

A standard score (z-score) is calculated by subtracting the mean from the score and then dividing by the standard deviation. For a score of 80: z = (80 - 40) / 10 = 4.0.

Suppose a Group of Scores Has a Mean of 40