H3.2

The Empirical Rule applies to distributions that are

According to the Empirical​ Rule, if a distribution is unimodal and​ symmetric, approximately​ 68% of the observations will be within one standard deviation of the​ mean, approximately​ 95% of the observations will be within two standard deviations of the​ mean, and nearly all the observations will be within three standard deviations of the mean.

According to the Empirical​ Rule, ________ will be within two standard deviations of the mean.

According to the Empirical​ Rule, if a distribution is unimodal and​ symmetric, approximately​ 95% of the observations will be within two standards deviation of the mean.

If an observation has a​ z-score of​ 0, this means which of the​ following?

If an observation has a​ z-score of​ 0, then it is equal to the mean. The mean is 0 standard deviations away from​ itself, so it has a​ z-score of 0.

Which of the following can be used to compare values measured in different​ units, such as inches and​ pounds?

The​ z-score measures distance from a mean in terms of standard​ deviations, so it can be used to compare values measured in different​ units, such as inches and pounds.