Convenience sampling is a nonprobability sampling method in which units are selected because they are easy to obtain. Since the inclusion probabilities are not controlled and readily available units may differ systematically from the target population, a convenience sample is generally subject to statistical bias.
Convenience Sampling
See also
Population, Sample, Sampling, Statistical Bias, Voluntary Response SampleExplore with Wolfram|Alpha
References
Cochran, W. G. Sampling Techniques, 3rd ed. New York: Wiley, 1977.Cite this as:
Weisstein, Eric W. "Convenience Sampling." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/ConvenienceSampling.html