If the mean of a set of data is 19.00, and 7.00 has a z-score of -1.50, then the standard deviation must be:
A) 8.00
B) 64.00
C) 4.00
D) 32.00

Name: If the mean of a set of data is 19.00, and 7.00 has a z-score of -1.50, then the standard deviation must be: A) 8.00 B) 64.00 C) 4.00 D) 32.00
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Question

Quizplus · Accepted Answer

The z-score is calculated as (x - mean) / standard deviation. If the z-score is -1.50 and the mean is 19.00, then the standard deviation must be (19.00 - 7.00) / -1.50 = 8.00.

If the Mean of a Set of Data Is 19