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IEVref: | 112-01-35 | ID: | |

Language: | en | Status: Standard | |

Term: | ordinal quantity | ||

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Definition: | quantity, defined by a conventional measurement procedure, for which a total ordering relation can be established, according to magnitude, with other quantities of the same kind, but for which no algebraic operations among those quantities exist
NOTE 1 – Ordinal quantities can enter into empirical relations only and have neither units of measurement nor dimension. Differences and ratios of ordinal quantities have no physical meaning. NOTE 2 – Ordinal quantities are arranged according to ordinal value scales. NOTE 3 – Examples: Rockwell C hardness, octane number for petroleum fuel, earthquake strength on the Richter scale, subjective level of abdominal pain on a scale from zero to five. | ||

Publication date: | 2010-01 | ||

Source: | ISO/IEC GUIDE 99:2007 1.26 | ||

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