What is the human development index (HDI)?
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The Human Development Index (HDI) is a statistic used to measure and compare the overall well-being and development of countries. It is calculated by considering indicators such as life expectancy at birth, education level (measured by years of schooling and expected years of schooling), and income level (measured by gross national income per capita). The UN Development Programme (UNDP) introduced the HDI in 1990 as a way to go beyond measuring economic growth and to assess the overall quality of life and human potential in different countries. The HDI ranges from 0 to 1, with 1 representing the highest level of development.