After reading this chapter, you should be able to:
- Explain why researchers select samples that are representative of a population of interest.
- Distinguish between subjects and participants as terms used to describe those who are subjected to procedures in a research study.
- Distinguish between probability sampling methods and nonprobability sampling methods.
- Delineate two nonprobability sampling methods: convenience sampling and quota sampling.
- Delineate four probability sampling methods: simple random sampling, stratified random sampling, systematic sampling, and cluster sampling.
- Define and explain sampling error and the standard error of the mean.
- Define and explain sampling bias and nonresponse bias.
- Identify potential ethical concerns related to sampling at schools.