Qualitative Evaluation and Research Methods: Sampling Approaches

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What is the main difference between qualitative and quantitative methods regarding sampling approaches?

Qualitative methods rely on random sampling, while quantitative methods focus on purposeful selection of small samples.

Qualitative methods focus on in-depth study of small purposefully selected samples, while quantitative methods depend on larger randomly selected samples. (correct)

Quantitative methods focus on in-depth study of small purposefully selected samples, while qualitative methods depend on larger randomly selected samples.

Both qualitative and quantitative methods depend on large randomly selected samples.

What is the main purpose of probability sampling in quantitative methods?

To select a truly random and statistically representative sample.

To focus on relatively small purposefully selected samples.

To permit generalization from the sample to a larger population. (correct)

To select information-rich cases for in-depth study.

What does the term 'information-rich cases' refer to in the context of purposeful sampling?

Cases that are randomly selected from the population.

Cases that are not statistically representative of the population.

Cases that provide a great deal of information about central research issues. (correct)

Cases that are not relevant to the purpose of the research.

How does purposeful sampling differ from probability sampling?

Purposeful sampling selects in formation-rich cases for study in depth, while probability sampling depends on larger samples selected randomly. (A) Signup and view all the answers

Why do qualitative methods typically focus on relatively small samples?

Because it allows for in-depth study of information-rich cases related to the research purpose. (A) Signup and view all the answers

What is the primary goal of probability sampling?

To permit generalization from the sample to a larger population. (A) Signup and view all the answers

What is the purpose of purposeful sampling?

To select information-rich cases to illuminate the questions under study (A) Signup and view all the answers

What does extreme or deviant case sampling focus on?

Cases that are rich in information because they are unusual or special in some way (B) Signup and view all the answers

What is the logic of extreme case sampling?

To learn about unusual conditions or extreme outcomes relevant to improving typical programs (A) Signup and view all the answers

When might extreme case sampling be particularly troublesome or especially enlightening?

When gathering standardized information from a large, statistically representative sample (A) Signup and view all the answers

What does the text suggest about selecting information-rich cases for study?

Illuminating the questions under study (D) Signup and view all the answers

What is the main aim of purposeful sampling?

Selecting information-rich cases to illuminate the questions under study (A) Signup and view all the answers

What is the logic behind purposefully selecting information-rich cases?

To illuminate the questions under study (B) Signup and view all the answers

When might an evaluator learn more by intensively studying examples of really poor programs and really excellent programs?

When one wants to precisely document the natural variation among programs (B) Signup and view all the answers

Qualitative Evaluation and Research Methods: Sampling Approaches

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