What is the appropriate sampling interval for drawing a systematic sample of 25 subjects from 200 women who had breast enhancement surgery in the course of a particular year at a specific medical centre?

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Quizplus · Accepted Answer

To obtain a systematic sample with a sample size of 25 from a population of 200, we need to divide the population size by the sample size: 200/25 = 8. This means we need to select every eighth patient in the population list to obtain a sample size of 25. Therefore, the appropriate sampling interval is every eighth patient. A sampling interval of every fourth, every fifth, or every tenth patient would result in a sample size that is either too small or too large.

What Is the Appropriate Sampling Interval for Drawing a Systematic