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Data- the values or categories recorded for each variable

Variable- any characteristic of an observational unit that can be recorded and studies, and that has some variation

Observational Unit- the person or thing from which data is being collected

Variability- the trend of a variable to have different values for different observational units

Quantitative- a variable that has a number, for which there are numerous possibilities

Categorical- a variable that has a designation given to it, for which there are a set number of possibilities

Binary- a categorical variable for which there are only two possible categories

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