ResearchVariables, Validity, and Control

Samples

The headless professor explains the difference between subjects (participants), groups, samples, and populations.

He offers a clinical example and a marketing one, and provides a diagram showing the relationship between a population, group, sample, and participants. What is the difference between subjects/participants, groups, samples, and populations?

Develop a research question. Are you able to identify your participants, relevant groups, secure a sample, and estimate your population of interest?

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