If a variable measures 'grades obtained at school,' and the grades imply an order (e.g., A B), but the difference between grades isn't necessarily equal, it is best classified as what?

Question

If a variable measures 'grades obtained at school,' and the grades imply an order (e.g., A > B), but the difference between grades isn't necessarily equal, it is best classified as what?

Accepted Answer

Ordinal variable. An ordinal variable has a defined order relation (like A being better than B), but the quantifiable distance between categories is not known or assumed to be equal. This aligns with standard statistical definitions, as confirmed by Source 2 which describes ordinal variables having an