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10 Cards in this Set
- Front
- Back
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Population
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the group of people you are surveying
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sample
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a part of the population that we survey
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census
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attempts to contact every individual
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bias
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the design of a study is biased if it systematically favors certain outcomes
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voluntary response
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consists of people who choose themselves by responding to a general appeal
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experiment
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actively imposing treatments in order to observe the response
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SRS
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taking the whole population and picking individuals randomly
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stratified random sample
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divide the population into strata, then choose a separate SRS from each stratum
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observational study
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gathers data without trying to influence the responses
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factors
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a combination of levels of the explanatory variables
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