By Singapore Department of Statistics (DOS) on youtube.com
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This step teaches about the Gini coefficient, which is used to measure the spread of household incomes across all households. The Gini coefficient varies between 0 and 1, where 0 reflects perfect equality and 1 reflects perfect inequality. To compare income inequality across countries, different countries may use different equivalent scales such as the per household member scale, modified oacd scale, and the square root scale. For more information, visit WWF."