The chair of the Psychology Department wants to determine the average GPA of all the psychology majors in Canada.She randomly selects 20 universities and compiles a list of the GPAs of all the psychology majors at those institutions.This list represents a(n):

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The list compiled by the chair of the Psychology Department represents a sample of the population, which is all the psychology majors in Canada. The sample was randomly selected from the population to make inferences about the population as a whole. It is not an experimental group because no manipulation or intervention was done, and it is not a case study because it is not a detailed examination of a single individual or group.

The Chair of the Psychology Department Wants to Determine the Average