statistical sampling convenience sampling Alejandra Gonzalez-Beltran Convenience sampling (also known as grab sampling, accidental sampling, or opportunity sampling) is a type of non-probability 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. Philippe Rocca-Serra accidental sampling from wikipedia: https://en.wikipedia.org/wiki/Convenience_sampling grab sampling opportunity sampling ready for release