For a normal distribution,practically all the area under the normal curve is within plus or minus three standard deviations from the mean.

Question

Quizplus · Accepted Answer

This statement is true according to the empirical rule, also known as the 68-95-99.7 rule, which states that about 68% of the observations fall within one standard deviation of the mean, about 95% within two standard deviations, and about 99.7% within three standard deviations in a normal distribution.

For a Normal Distribution,practically All the Area Under the Normal