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The Human Development Index (HDI) is a summary measure of average achievement in key dimensions of human development: a long and healthy life, being knowledgeable and have a decent standard of living. The HDI is the geometric mean of normalized indices for each of the three dimensions.
One measure of standard of living is the Human Development Index (HDI), developed in 1990 by the United Nations. It considers life expectancy at birth, adult literacy rates and per capita gross domestic product (GDP) to measure a country's level of development.