Statistics and Probability Dictionary
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The nominal scale is a type of measurement scale. Values assigned to variables represent a descriptive category, but
have no inherent numerical value with respect to magnitude.
Gender is an example of a variable that is measured on a nominal scale. Individuals
may be classified as "male" or "female", but neither value represents more
or less "gender" than the other. Religion and political affiliation are
other examples of variables that are normally measured on a nominal scale.