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Classify the variable brand of automobile?

The variable "brand of automobile" is a categorical nominal variable.

* Categorical: Because it represents categories (e.g., Ford, Toyota, Honda) rather than numerical values.

* Nominal: Because there's no inherent order or ranking among the categories. There's no sense in saying "Ford" is "better" or "worse" than "Toyota" in a purely numerical way. The categories are simply names.