The sampling strategy used when collecting a truly representative sample is difficult or impossible is CONVENIENCE sampling.
Convenience sampling is usually described as a non-probability sampling usually because it does not include random selection of participants or persons involved in the study, rather it samples the easily reachable subjects.
It is especially used when reaching the population of interest is proving somewhat difficult. In other to mitigate this difficulty, reaching out to more easily reachable targets is often the best bet.
Hence, the adoption of convenience sampling technique.
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