Convenience sampling is a type of sampling by which the researcher selects a study environment and/or study participants primarily based on ease of access, availability, and/or familiarity. Convenience 
sampling is not uncommon in qualitative research when researchers may need to complete their research in a short time frame and at a relatively low cost. For example, an ethnographer who wants to study how people behave in a confined space might design her research to observe people on her daily commute on the local subway. Or a graduate student might select clergy within a narrow radius of his university to conduct in-depth interviews to understand the roles clergy play in the lives of their congregations. Or focus group discussions might be conducted at a geriatric facility where the researcher visits her parents in order to learn about skilled nursing care.
In each case, the researcher may come away with insightful information…
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