1. Explain the considerations that determine whether the mean or the median is the best measure of central
tendency for a data set.
414 13 • Review Questions
Access for free at openstax.org
2. Explain the difference between a mean and a weighted mean.
3. Explain why the standard deviation of a data set cannot be a negative value.
4. Explain what a negative z-score, a positive z-score, and a z-score of zero imply.
5. Explain how quartiles can be used to detect outliers in a data set.