Objects classified by type or characteristic with some logical order.

Response categories can be placed in a logical order, but the distance between categories is not equivalent – e.g. Very likely – quite likely – not sure – quite unlikely – very unlikely.

Categorical data gathered into groups, with order attached to them. For example, job grade, age group.

Data that is organized into categories that can be placed in order by size, amount, or other quantity, but the size of the intervals between the categories are not known or cannot be measured  Related terms:  interval data, nominal data

Data that are classified into ordered (ie one category is higher or lower than another) qualitative (ie the numerical distance between their possible values is undefined or unknown) mutually exclusive categories.