The Empirical Rule states that for a bell-shaped distribution, approximately 95 percent of data should lie within:
A) one standard deviation from either side of the mean.
B) two standard deviations from either side of the mean.
C) three standard deviations from either side of the mean.
D) four standard deviations from either side of the mean.

Question

Quizplus · Accepted Answer

The Empirical Rule, applicable to bell-shaped (normal) distributions, states that about 95% of the data falls within two standard deviations from the mean.

The Empirical Rule States That for a Bell-Shaped Distribution, Approximately