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Probability and Non-Probability Sampling Methods

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Questions and Answers

What is the primary advantage of using proportionate stratified sampling in a research study?

It guarantees that the sample will be perfectly representative of the population. (correct)
It allows for the selection of clusters rather than individual participants.
It reduces the likelihood of sampling bias due to the use of randomization.
It ensures that every individual in the population has an equal chance of being selected.

In a cluster sampling method, what is typically selected from a list of all the clusters that exist within the population?

Systematic samples
Individual participants
Preexisting groups (correct)
Random strata

What is the primary limitation of cluster sampling?

It does not ensure randomness in the selection of participants.
It is a time-consuming and expensive method.
It is only used in qualitative research studies.
The selections are not really random or independent. (correct)

Which of the following is a condition under which deception may be used in a research study?

When participants’ knowledge of a study’s true purpose will have a negative impact on their actions or responses. (D) Signup and view all the answers

What is the primary purpose of using stratified sampling in a research study?

To guarantee that the sample will be perfectly representative of the population. (B) Signup and view all the answers

What is the difference between proportionate and disproportionate stratified sampling?

Proportionate sampling involves selecting a sample from each stratum in proportion to the population, while disproportionate sampling involves selecting a sample from each stratum in equal numbers. (D) Signup and view all the answers

What is the primary advantage of using random sampling in a research study?

It reduces the likelihood of sampling bias due to the use of randomization. (C) Signup and view all the answers

What is the primary difference between cluster sampling and systematic sampling?

Cluster sampling involves selecting preexisting groups, while systematic sampling involves selecting every nth individual from a list. (A) Signup and view all the answers

What is the primary limitation of using deception in a research study?

It may lead to participants changing the way they would act normally. (A) Signup and view all the answers

What is the primary purpose of using deception in a research study?

To prevent participants from changing their behavior or hiding information if they knew the true purpose of the study. (B) Signup and view all the answers

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