Purposive sampling (also known as judgment, selective or subjective sampling) is a sampling technique in which researcher relies on his or her own judgment when choosing members of population to participate in the study. Wide range of techniques. Purposive sampling is a judgemental sampling in which it is easy to select the participant on the basis of qualities of the participants (Etikan et al., 2016). In nonprobability sampling, the population may not be well denned. A purposive sample is a non-probability sample that is selected based on characteristics of a population and the objective of the study. Nonprobability sampling is often divided into three categories: purposive sampling, convenience sampling, and quota sampling. Although, Nonprobability sampling has a lot of limitations due to the subjective nature in … Convenience sampling differs from purposive sampling in that expert judgment is not used to select a representative sample of elements. Conclusion. Since there are several different types of purposive sampling (e.g. consecutive sampling is more reliable than convenient. This article studied and compared the two nonprobability sampling techniques namely, Convenience Sampling and Purposive Sampling. While probability sampling is based on the principle of randomization where every entity gets a fair chance to be a part of the sample, non-probability sampling relies on the assumption that the characteristics are evenly distributed within the population, which make the sampler believe that any sample so selected would represent the whole population and the results drawn would … The result of sampling is thus more likely to represent the target population that the resulting of convenience sampling. When researchers use surveys or polls to collect data from a specific population sample, then the information they acquire is useful in real-time situations. Purposive sampling can produce results that are available in real-time. homogenous sampling, expert sampling, critical case sampling, etc. MEANING AND OBJECTIVE Purposive sampling is a sampling method in which elements are chosen from among the whole population based on purpose of the study. Purposive sampling is different from convenience sampling and is also known as judgmental, selective, or subjective sampling. The main objective of purposive sampling is that the researcher, with his good decision and appropriate policy, chooses those elements which are meant for fulfilling the research objective. 1 Advantages of Purposive Sampling. ), one of the key benefits of this sampling method is the ability to gather large amounts of information by using a range of different techniques. Convenience Sampling and Purposive Sampling are Nonprobability Sampling Techniques that a researcher uses to choose a sample of subjects/units from a population.
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