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3.1.7.1 Probability sampling
Probability sampling methods are those in which every item in the universe has a known chance, or probability, of being chosen for the sample. This implies that the selection of sample items is independent of the person making the study-that is, the sampling operation is controlled so objectively that the items will be chosen strictly at random. |
Last modified: Thursday, 10 November 2011, 6:29 AM