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Purposive sampling: Definition, application, advantages and disadvantages



Purposive sampling







Purposive sampling also knows as judge mental, selective, or subjective sampling, reflects group of  sampling techniques that rely on the judgment of the researcher.

  Example of purposive sampling

 Specific people, specific organization, specific events.

Application of purposive sampling

·    It is an improved version of simple random sampling and used in research, where the formation of the population is known. This method is used when group is to be arranged in a sequence.

Advantage of purposive sampling

  •         It is a simple method of sampling.
  •         Systematic samples are convenient to draw and excuse.
  •        This method is comparatively economic isn terms of time, labour and money.

Disadvantage of purposive sampling

  •         This information doesn’t represent the population.
  •         Unwillingness to help and co operate
  •         Selecting informants who are convenient for study.

Types of purposive sampling

  •         Judgmental sampling,
  •         Quota sampling.

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