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8 Cards in this Set

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descriptive statistics
measures of central tendency, frequency distributions, variability, graphs
inferential statistics
taking a number from a sample and making inferences about the population such as parameter estimation and hypothesis testing
parameter
a number that summarizes a population
statistic
a number that summarizes a sample from a population
nominal variable
naming categories.....place of birth, hair color
ordinal variable
---cannot assume equal intervals

example: rank of finish or social class ranking
interval variable
can assume equal intervals between adjacent units

example: seasonal temperature
Ratio variable
has an absolute variable 0

example: body weight or GPA