Which of the following samples is least likely to be representative of the overall population?
a. Convenience
b. Quota
c. Random
d. Stratified random
ANS: A
Multiple biases may exist in a convenience sample, some of which may be subtle and unrecognized. There is little opportunity to control for bias in a convenience sample.
Quota provides for more representation than convenience sampling.
Random sampling provides the most representative sample for studies.
Stratified random sampling is a form of probability sampling and provides a representative sample for study.
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