# Ordinal scale

Abbreviation | |
---|---|

Synonym | |

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 |

Scope | An ordinal scale serves for the comparison of examined values regarding a kind-of-property that can be ordered by magnitude. |

Description |
The results are presented with alphabetic letters or numerical values in a hierarchal way. Ordinal scale is mainly attributed to NPU codes with arbitrary kinds-of-quantity. Results that have an arbitrary magnitude and are presented as numerical values express an ordered rank. Most important the numerical values cannot be added, subtracted, divided or multiplied, and the difference between two values is not the same between the numerical values. |

Value set |
## Results with numbers{0<1<2<3}. ## Results with alphabetic letters{none<little<much<very much}. {no<yes}. |

Reference | |

Date established | |

Date entry | |

Date revision |

- arbitrary activity
- arbitrary amount-of-substance
- arbitrary concentration
- arbitrary catalytic activity
- arbitrary catalytic-activity concentration
- arbitrary content
- arbitrary entitic amount-of-substance
- arbitrary entitic number
- arbitrary fraction
- arbitrary number
- arbitrary number concentration
- arbitrary number fraction
- arbitrary rate
- arbitrary threshold concentration
- arbitrary time
- arbitrary viscosity
- category
- compatibility
- expiry
- kind-of-property
- motility
- presence
- relative substance fraction
- susceptibility