13.3 Gini coefficient of inequality

13.3 Gini-stuðullinn

The Gini coefficient of inequality shall be calculated as a ratio with values between 0 and 1: the numerator is the area between the Lorenz curve of the distribution and the uniform distribution line; the denominator is the area under the uniform distribution line. The Gini coefficient (also known as the “Gini Index” or “Gini Ratio”) is a measure of statistical dispersion that quantifies inequality among incomes or levels of consumption. If income were distributed equally, then the Lorenz curve and the line of total equality would merge and the Gini coefficient would be 0. On the other hand, if one individual received all income, then the areas of A and B would be similar, resulting in a Gini value of 1. Data source: Statistics Iceland.

Reikna skal Gini-stuðulinn sem hlutfall með gildi á milli 0 og 1: teljarinn er svæðið á milli Lorenz-ferils dreifingarinnar og samræmdu dreifilínunnar; nefnarinn er svæðið undir samræmdu dreifilínunni. Gini stuðullinn (einnig þekktur sem „Gini vísitalan“ eða „Gini hlutfall“) er mælikvarði á tölfræðilega dreifingu sem mælir ójöfnuð milli tekna eða neyslustigs. Gagnaveitur: Hagstofa Íslands.

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