Non- probability sampling is one of the sampling technique that help researchers to select units from a population that they are interested in studying. The main characteristic of non- probability sampling technique is “the samples are selected on the basis of subjective judgment of the researcher, instead of random selection”, this is the cornerstone of probability sampling technique. There are two strong practical and theoretical reasons for its use, many researchers may view this non-probability sampling technique as an inferior probability sampling technique.
Non-probability sampling represents sampling techniques of a valuable group that are used in the researches, follows qualitative, mixed methods, and even quantitative research designs. This is the theoretical reason. Non-probability sampling is often used becaus