Approximately 95 percent of the cases represented by the normal curve fall within ________ standard deviation(s)from the mean.
A) 1
B) 2
C) 3
D) 5

Question

Quizplus · Accepted Answer

The empirical rule states that approximately 68 percent of the data falls within one standard deviation from the mean, 95 percent of the data falls within two standard deviations from the mean, and 99.7 percent of the data falls within three standard deviations from the mean. Therefore, approximately 95 percent of the cases represented by the normal curve fall within two standard deviations from the mean.

Approximately 95 Percent of the Cases Represented by the Normal