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8 Cards in this Set
- Front
- Back
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descriptive statistics
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measures of central tendency, frequency distributions, variability, graphs
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inferential statistics
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taking a number from a sample and making inferences about the population such as parameter estimation and hypothesis testing
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parameter
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a number that summarizes a population
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statistic
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a number that summarizes a sample from a population
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nominal variable
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naming categories.....place of birth, hair color
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ordinal variable
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---cannot assume equal intervals
example: rank of finish or social class ranking |
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interval variable
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can assume equal intervals between adjacent units
example: seasonal temperature |
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Ratio variable
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has an absolute variable 0
example: body weight or GPA |
