The properties of a normal curve are such that ______ of the values under it occur plus or minus 2 standard deviations from the mean.
A) 50%
B) 68%
C) 95%
D) 99%

Question

Quizplus · Accepted Answer

This is known as the 68-95-99.7 rule, which states that approximately 68% of the values will fall within one standard deviation of the mean, approximately 95% of the values will fall within two standard deviations of the mean, and approximately 99.7% of the values will fall within three standard deviations of the mean in a normal distribution. Therefore, the correct choice is C) 95%.

The Properties of a Normal Curve Are Such That ______