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Card 11 / 14:
qualitative variables
Categorical variable Also known as categorical variables, qualitative variables are variables with no natural sense of ordering. For instance, hair color (Black, Brown, Gray, Red, Yellow) is a qualitative variable, as is name (Adam, Becky, Christina, Dave . . .). Qualitative variables can be coded to appear numeric but their numbers are meaningless, as in male=1, female=2. Variables that are not qualitative are known as quantitative variables .
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