Define the concept of a variable, distinguish quantitative from categorical variables, and give examples of variables that might be of interest to psychologists. Explain the difference between a population and a sample.

Business Question

1. Define the concept of a variable, distinguish quantitative from categorical variables, and give examples of variables that might be of interest to psychologists.
2. Explain the difference between a population and a sample.
3. Distinguish between experimental and non-experimental research.
4. Distinguish between lab studies, field studies, and field experiments.