Categorical Scale

In addition, the four Stevens’ scale types can also be aggregated into two families:

- Categorical scales, including nominal and ordinal scales, as they include a finite number of categories (or levels), which are generally associated with corresponding numerical values. While categories are unordered for nominal scales, they are ordered for ordinal scales. However, for both these scales the notion of difference (or distance) between objects is meaningless.

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• Absolute Scale

• Cardinal Scale (Dictionary Entry)

• Interval Scale (Dictionary Entry)

• Measurement Scale (Dictionary Entry)

• Nominal Scale (Dictionary Entry)

• Ordinal Scale (Dictionary Entry)

• Ratio Scale (Dictionary Entry)

• Scale (Dictionary Entry)