Data that have a specific order. One observation is ranked against another or in a system of classes (e.g. asking people to rank preferences in order â€“ first, second, third and so on â€“ in a questionnaire).
An ordinal is a well-ordered set with the property that each element, a = Sa where Sa is the Section of a. Alternatively an ordinal is a set with the special property that each element is the set of all its predecessors.
A type of variable for which there is a natural ordering to the values which it can take. It does not necessarily have to be numeric. For example, the response to a question on a survey is ordinal if it can take the values "disagree strongly", "disagree", "agree", and "agree strongly".
Refers to ranking of scores along a continuum based on the perceptions of the person taking the test. Numbers are assigned to indicate the relative extent to which a characteristic is experienced. The differences between scores are relative, and the same score doesn't always mean exactly the same thing. The Expanded Disability Status Scale (EDSS) is an ordinal scale used in MS. There may be small differences between people with a score of 0.0 (normal neurological exam) and 1.0-1.5 (no disability, but some abnormal signs on exam). There may be large differences between people with a score of 2.0-5.5 (disability, but able to walk without assistance).
A level of measurement at which only relative information is available about a feature, such as a ranking. For a highway, for example, the line is coded to show a Jeep trail, a dirt road, a paved road, a state highway, or an interstate highway, in ascending rank.