Ordinal number

Commonly, ordinal numbers, or ordinals for short, are numbers used to denote the position in an ordered sequence: first, second, third, fourth, etc., whereas a cardinal number says "how many there are": one, two, three, four, etc. (See How to name numbers.)

Related Topics:
Cardinal number - ''How to name numbers''

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

An ordinal scale defines a total preorder of objects; the scale values themselves have a total order; names may be used like "bad", "medium", "good"; if numbers are used they are only relevant up to strictly monotonically increasing transformations (order isomorphism). See also level of measurement.

Related Topics:
Total - Preorder - Total order - Up to - Monotonic - Order isomorphism - Level of measurement

~ ~ ~ ~ ~ ~ ~ ~ ~ ~