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The Gini Coefficient

  • Levels: AS, A Level, IB
  • Exam boards: AQA, Edexcel, OCR, IB, Pre-U, Eduqas, WJEC

The Gini coefficient measures the inequality among values of a frequency distribution (for example levels of income).

The Gini Coefficient

A Gini coefficient of zero expresses perfect equality where all values are the same (for example, where everyone has an exactly equal income). A Gini coefficient of one (100 on the percentile scale) expresses maximal inequality among values (for example where only one person has all the income).

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