Nominal variable

A variable that can be classified into a category (e.g., male or female sex); often called categorical variable. A categorical variable may be nominal or ordinal. Categorical variables can be defined according to attributes without any associated order (e.g., medical admission, elective surgery, or emergency surgery); these are called nominal variables. A categorical variable can also be defined according to attributes that are ordered (e.g., height such as high, medium, or low); these are called ordinal variables.

Nominal variable Resources
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