Ordinal may refer to:
- Ordinal number (linguistics), a word representing the rank of a number
- Ordinal indicator, the sign adjacent to a numeral denoting that it is an ordinal number
- Ordinal number in set theory, a number type with order structures
- Ordinal date, a simple form of expressing a date using only the year and the day number within that year
- In statistics, ordinal data is one level of measurement. In linguistics ordinal numbers are the words representing the rank of a number with respect to some order in particular order or position (i º redirects here It is not to be confused with the Degree symbol ° In Set theory, an ordinal number, or just ordinal, is the Order type of a Well-ordered set. An ordinal date is a Calendar date consisting of a year and a day of year ranging between 1 and 366 (starting on January 1) The level of Measurement of a Variable in Mathematics and Statistics is a classification that is used to describe the nature of information
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