What percent of scores fall beyond 2 standard deviations away from the mean?
A) 28
B) 14
C) 4
D) 2

Question

Quizplus · Accepted Answer

Approximately 95% of scores fall within 2 standard deviations of the mean in a normal distribution, leaving about 5% of scores beyond 2 standard deviations from the mean. Since this 5% is split between both tails of the distribution, each tail contains about 2.5%. Therefore, the total percentage of scores beyond 2 standard deviations from the mean is approximately 5%, making option C (4%) the closest choice.

What Percent of Scores Fall Beyond 2 Standard Deviations Away