Where you order the measurements according to some rule but there is no straightforward relationship between the categories.
For example, with measurements classified as: short, medium, tall. It is not possible to say whether the difference between medium and short is smaller than/equal to/larger than the difference between tall and medium.
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At least ordinal
nominal
It is an ordinal scale.
ordinal
It depends on the specific likert scale, but generally it is the ordinal level