Sampling Methods_Recap

Which of the following statements defines sampling?

• It is the portion of the target population to which the researcher has reasonable access.

• It is the number of people who participate in a study.

• It is the process of selecting a portion of the population to represent the entire population.

• It is the subset of a population comprising those selected to participate in a study

A sample of 250 members randomly selected from a roster of Singapore Nurses’ Association members

Which type of sampling method was used?

• Simple random sampling

• Stratified random sampling

• Systematic sampling

• Cluster sampling

Which of following methods reflects a systematic sampling?

• Choosing participants randomly from a list until desired size is achieved

• Choosing the same number of participants from different location

• Choosing every Nth name from a list

• Choosing participants who are readily available at an outpatient clinic

Which of the following non-probability sampling methods is NOT commonly used in qualitative research?

• Convenience sampling.

• Quota sampling.

• Purposive sampling.

• Snowball sampling.

What is sampling bias?

• Bias resulting when non-probability sample is drawn.

• Bias resulting from the inappropriate designation of eligibility criteria.

• Bias resulting from the use of probability sampling method.

• Bias resulting from over-representation or under-representation of population segments in a sample.

Which type of sampling is most vulnerable to bias?

• Quota Sampling

• Convenience Sampling

• Purposive Sampling

• Snowball Sampling