Judgment sample is a type of nonrandom sample that is selected based on the opinion of an expert. Results obtained from a judgment sample are subject to some degree of bias, due to the frame and population not being identical. The frame is a list of all the units, items, people, etc., that define the population to be studied.
- Deming, W. Edwards (1990). Sample Design in business research. John Wiley and Sons. p. 31. ISBN 0-471-52370-4.
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