Chapter 4 Questions

1. What is meant by the following terms:

Population

Sample

Census

Sampling frame

Sampling unit

2. What are the advantages of sampling over surveying an entire population?

3. How is a sampling frame typically constructed?

4. Give some examples of situations where a sampling frame cannot be constructed.

5. What is the difference between probability sampling and non-probability sampling?

6. How is a simple random sample constructed?

7. How would you use a table of random digits to create a random sample?

8. What is the difference between simple random sampling and systematic random sampling?

9. What is meant by the term “stratified random sampling”?

10. How would you create such a sample?

11. What is the difference between stratified random sampling and cluster sampling?

12. What is a cluster?

13. What is meant by “multistage cluster sampling”?

14. Why would anyone use cluster sampling instead of simple random or stratified sampling?

15. What is a major disadvantage of nonprobability sampling?

16. What are some advantages of nonprobability sampling?

17. What is meant by the following terms:

Accidental sampling

Convenience sampling

Purposive sampling

Quota sampling

Snowball sampling

18. Under what circumstances might you use each type of sampling?

19. What are the advantages and disadvantages of each?