SUBJECTS AND SAMPLING 101
Selection should be appropriate to the problem.
Sample size should be adequate.
Qualitative research should use the most knowledgeable and in-
What is a sample and a population?
is it important to define the population
3. What is the sampling?
between probability and nonprobability
should a researcher use stratified random sampling?
How is cluster sampling different from stratified sampling?
Why should readers of research be cautious of studies that use a
some strengths and weaknesses of various types of
8. How can volunteer subjects cause bias in a study?
9. Why is sample size an important consideration in research that
a “significant” difference or relationship?
In what ways can sampling be biased?
Give an example of a study that used both stratified and system- atic sampling.
is the difference between a convenience and a purposive sample?
criteria should be used in judging the adequacy of a subjects section in a report or sampling procedure?
SAMPLE TEST QUESTIONS Answers are provided in Appendix A.
The sampling frame is most similar to the
We use the results obtained from a sample to