nonrandom sampling convenience sampling http://purl.obolibrary.org/obo/NCIT_C53204 https://en.wikipedia.org/wiki/Convenience_sampling https://www.wikidata.org/wiki/Q4672604 A type of nonrandom sampling that involves the sample being drawn from that part of the population that is close to hand. This type of sampling is most useful for pilot testing. accidental sampling grab sampling opportunity sampling volunteer sampling convenience sample