Answer:
The Human Development Index HDI is defined as the composite statistics used to rank countries by levels of human development. The HDI is a measure of health, education and income. It measures the average achievements in a country in these three basic dimensions of human development, calculated into an index.
Health - Life expectancy at birth
Education - expected years schooling for school-age children and average years of schooling in the adult population
Income - measured by Gross National Income (GNI) per capita
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