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.
At least ordinal
nominal
It is an ordinal scale.
ordinal
It depends on the specific likert scale, but generally it is the ordinal level
Year of birth is interval level of measurement; age is ratio.
At least ordinal
nominal
Ordinal
It is an ordinal scale.
Ratio
ordinal
It depends on the specific likert scale, but generally it is the ordinal level
Neither, age is at a ratio level of measurement.
It can be computer for ordinal level data or higher. It is NOT effected by extremely large or small numbers
Grade scores are an ordinal level of measurement. A ratio level of measurement would be weight of a person or how much money a person has.
Questionnaires typically use nominal, ordinal, interval, or ratio levels of measurement. The level of measurement chosen depends on the specific type of data being collected and the research objectives.