A representative sample very closely parallels, or matches, the larger group on relevant characteristics, such as age, sex, race, marital status, and educational level.

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A representative sample is one that accurately represents the larger population in terms of relevant demographic characteristics. This helps ensure that the findings of the study can be extrapolated to the population as a whole with a high degree of accuracy.

A Representative Sample Very Closely Parallels, or Matches, the Larger