Purposive sample

What is purposive sampling?

Purposive sampling is a non-probability sampling technique that is used when the researcher has a specific purpose in mind. It is a type of sampling that is used to select a sample that has some particular characteristics or qualities that are of interest to the researcher. The researcher must have a specific goal or research question in mind when using this type of sampling.

Advantages of Purposive Sampling

Purposive sampling has several advantages, including:

  • The sample size can be small, so it is cost-effective.
  • The sample can be chosen quickly, so the research results can be obtained quickly.
  • It can be used to select participants who have a specific quality or characteristic that is essential to the study.
  • It can be used to select participants who are knowledgeable about the topic of the study.

Examples of Purposive Sampling

Purposive sampling can be used in a variety of research studies. Here are some examples of how it can be used:

  • Expert Sampling: This type of sampling is used to select participants who have expertise or knowledge related to the topic of the study. For example, a researcher may use this method to select participants who are knowledgeable about a particular technology.
  • Snowball Sampling: This type of sampling is used to select participants who are connected to other people who have the same characteristics or qualities. For example, a researcher may use this method to select participants who are connected to people who have experience with a particular technology.
  • Convenience Sampling: This type of sampling is used to select participants who are easily accessible. For example, a researcher may use this method to select participants who are easily available at a particular location.

Conclusion

Purposive sampling is a useful technique for selecting a sample of participants with a particular quality or characteristic that is essential to the research. It can be used in a variety of research studies and has several advantages, including cost-effectiveness and quick results.

References