Question 31Which sampling method selects every nth individual?

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The prompt asks: 'Question 31 Which sampling method selects every nth individual?' However, the provided data does not include a list of answer choices to compare. In typical multiple-choice assessments, several common sampling methods could appear such as simple random sampling, systematic sampling, stratified sampling, cluster sampling, and convenience sampling. To reason through the concept regardless of the absent options, consider what each method entails. Systematic sampling is defined by selecting every nth member of a population list after choosing a random starting point; for example, selecting every 10th person. This contrasts with simple random sampling, where each member has an equal independent chance of selection without a fixed interval; stratified sampling, where the population is divided into subgroups and samples are drawn from each; cluster sampling, where entire groups are sampled; and convenience sampling, where samples are chosen based on ease of access rather than a probabilistic framework. The mechanism of 'every nth' corresponds to a fixed-interval approach, which is the hallmark of systematic sampling. If there were answer choices, one would look for the option describing a method that uses a regular, repeated interval along a population list. In evaluating edges, remember that systematic sampling can introduce bias if there is a hidden pattern in the population list that aligns with the chosen interval, and that the randomness is in the initial starting point rather than the interval itself. Conversely, other methods either do not use a fixed interval (simple random), segment the population and sample within segments (stratified), sample entire clusters (cluster), or pick units based on convenience (convenience). Without the explicit options, the reasoning centers on matching the described procedure to the well-known definition of systematic sampling and contrasting it with the other sampling paradigms.

Question 31Which sampling method selects every nth individual?

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