Sampling

The video tutorial explains the concept of sampling in psychological research, comparing it to medical blood sampling. It introduces key terms like target population, sample, representativeness, and generalizability. The tutorial distinguishes between probability and non-probability sampling, detailing methods like random and stratified sampling, and their challenges. It also covers non-probability sampling methods such as convenience, purposive, and self-selected sampling, highlighting their advantages and limitations. Finally, it emphasizes the importance of evaluating sampling methods based on what is measured, sample size, and representativeness.

What is the term used to describe the entire group of people that could potentially be studied in research?

• Target Population

• Experimental Group

• Sample

• Control Group

Which sampling method ensures every member of the target population has an equal chance of being selected?

• Purposive Sampling

• Stratified Sampling

• Convenience Sampling

• Random Sampling

In stratified sampling, how is the selection process different from random sampling?

• It is completely random

• It is manipulated to reflect the target population better

• It only includes volunteers

• It focuses on a specific category of participants

Which of the following is a non-probability sampling method?

• Random Sampling

• Stratified Sampling

• Purposive Sampling

• Systematic Sampling

Why might researchers choose non-probability sampling methods?

• They are more expensive

• They are quicker and cheaper

• They guarantee representativeness

• They eliminate bias

What is a major limitation of non-probability sampling methods?

• They are too expensive

• They require large sample sizes

• They are unlikely to be representative

• They are too time-consuming

What is a common error made when generalizing findings from a study?

• Using a large sample size

• Using only probability sampling methods

• Generalizing from non-representative samples

• Ensuring all participants are volunteers