AP Psychologymediummcq1 pt
In a normal distribution, approximately what percentage of scores falls within one standard deviation of the mean?
A.99.7%
B.95%
C.68%
D.50%
Explanation
Core Concept
The empirical rule (68-95-99.7 rule) states that approximately 68% of data falls within one standard deviation of the mean in a normal distribution.
Correct Answer
C68%
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