Examlex
The opportunity cost of a purchase is
Representative
An individual elected to act and speak on behalf of others, typically in a legislative body.
Demographic Traits
Characteristics used to describe and categorize populations, such as age, gender, ethnicity, and income.
Literary Digest
A general interest magazine published in the United States in the early 20th century, known for its polls, including the famously erroneous prediction of the 1936 presidential election.
Random Sample
A selection method where participants are chosen from a larger population in a way that each individual has an equal chance of being included.
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