About 99 percent of scores fall between ________ standard deviation(s) above and below the mean in a normal distribution.
A) three
B) two
C) one
D) four

Name: About 99 percent of scores fall between ________ standard deviation(s) above and below the mean in a normal distribution. A) three B) two C) one D) four
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In a normal distribution, approximately 99.7% of scores fall within three standard deviations above and below the mean, which is often rounded to 99% for simplicity.

About 99 Percent of Scores Fall Between ________ Standard Deviation(s)