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14 Cards in this Set
- Front
- Back
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sample
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set of actual observations, subset of a population
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statistics
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numerical values summarizing sample data
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parameters
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numerical values summarizing population data
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random sample
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a sample in which each member of the population has an equal chance of inclusion
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population
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complete set of events in which you are interested
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measurement vs. categorical (frequency data or count data)
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data obtained by measuring objects or events vs. data representing counts or number of observations in each category
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nominal scales
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name things; numbers used only to distinguish between objects
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ordinal scales
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numbers used only to place objects in order
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interval scale
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scale on which equal intervals objects represent equal differences - differences are meaningful
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ratio scale
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a scale with a true zero point - ratios are meaningful
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continuous variable
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one that can take on many possible values
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discrete variable
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one that takes on only a few possible values
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dependent variable
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the variable that you are measuring
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independent variable
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variable that you manipulate
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