- Distinguish the two foci of sampling theory.
- Identify the circumstances that make sampling unnecessary and the reason they’re rare.
- Identify the relation between the elements, the sampling units, the sample, the sampling frame, and the target population.
- Define the concept of representative sample and explain how it contrasts with the concept of bias.
- Define and distinguish probability and nonprobability sampling.
- Define the major types of probability sampling method and indicate when each is preferred.
- Explain when nonprobability sampling methods may be preferred.
