format: meaning/draft-1
id: statistics
name: Statistics
description: Derived measures that apply to any dataset.
license: CC0-1.0
concepts:
  - id: per-capita
    kind: measure
    labels:
      en: Per capita
      ru: На душу населения
    synonyms:
      en: [per person, per head, relative to population, per million people, per thousand people]
      ru: [на человека, на миллион человек, относительно населения]
    description: >-
      A pattern, not a number on its own: any measure for a place divided by
      the population of the same place, so that large and small places can
      be compared. It is a ratio, so it is never summed across places. A
      concept that extends it names the measure, the scale and the population
      source and year, and states its unit as the measure's unit per the
      scale's number of people (USD per million people).
    measure:
      formula: >-
        The measure for a place, divided by the population of that place
        (same year where possible), multiplied by the scale (1 for "per
        person", 1,000,000 for "per million people").
      aggregation: none
      inputs: [population]