After completing this chapter, you will be able to:

1. Understand why we study statistics.
2. Explain what is meant by descriptive statistics and inferential statistics.
3. Distinguish between a qualitative variable and a quantitative variable.
4. Distinguish between a discrete variable and a continuous variable.
5. Distinguish among nominal, ordinal, interval, and ratio levels of measurement.
6. Define the terms mutually exclusive and exhaustive.