A researcher interested in making inferences believes that the outcome of interest varies across various subgroups of the population and that subgroups may be underrepresented using simple random sampling procedures. Which of the following sampling methods would be best to use in this case?

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Stratified random sampling is the best method in this scenario because it involves dividing the population into subgroups (strata) that are relevant to the research question and then sampling from each subgroup. This ensures that all subgroups are adequately represented in the sample, allowing for more accurate inferences about the entire population and its subgroups.

A Researcher Interested in Making Inferences Believes That the Outcome