1. Every data set contains only one mode. True or False?
2. A convenience sample is never acceptable in a research study. True or False?
3. The third quartile separates the lowest 75% of the data from the highest 25%. True or False?
4. A negative z-score determines how many standard deviations a value is ____ the mean.
5. If an event can not occur, then its probability is?
6. The entire collection of all individuals about which information is sought is called a ...?

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