Lecture 6 Who are we talking about? Populations and samples. Overview. Defining a populationTaking a simple random sampleHow similar is the sample to the population?. Population and Samples. Population All the cases (individuals, objects, or groups) in which the researcher is interested.Sample A relatively small subset from a population.ExampleThe US population: ~300 million peopleThe General Social Survey (GSS): a sample of the US populationabout 3,000 peopleStudent version of the GS273
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