A sample in which each target population element has a known,nonzero chance of being included in the sample is called a probability sample.

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A probability sample is defined as a sample where each element in the target population has a known, nonzero chance of being included in the sample. This means that every element has an equal opportunity of being selected, and the selection process is based on chance rather than subjective or biased criteria. Probability sampling is considered the gold standard in survey research because it provides an unbiased representation of the target population.

A Sample in Which Each Target Population Element Has a Known,nonzero