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Human development index.

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.
It was an index prepared by world bank under which all the nations of the world are ranked according to their functioning in various parameters like literacy rate, life expectancy ,etc.
It compares countries based on per captia income, litracy rate, health status , and human development


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