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any method of selection of a sample based on the theory of probability; at any stage of the operation of selection the probability of any set of units being selected must be known. It is the only general method known which can provide a measure of precision of the estimate.
probability sampling . Andmeanalüüsi ja statistika oskussõnastik. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//aso/probability%20sampling/1/eng (28.07.2026)