Gabe had a score of 70 in a class with a mean of 80 and a standard deviation of 10.His z-score is
A) +2.0.
B) +1.0.
C) -1.0.
D) -2.0.

Name: Gabe had a score of 70 in a class with a mean of 80 and a standard deviation of 10.His z-score is A) +2.0. B) +1.0. C) -1.0. D) -2.0.
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Question

Quizplus · Accepted Answer

To find Gabe's z-score, we use the formula:

z-score = (x - mean) / standard deviation

Plugging in the values, we get:

z-score = (70 - 80) / 10
z-score = -1.0

Therefore, the answer is C.

Gabe Had a Score of 70 in a Class with a Mean