What does HDI mean? Human Development Index (HDI) is a statistical tool used to measure a country’s overall achievement in its social and economic dimensions. HDI examines three important criteria of economic development: life expectancy, education, and standard of living. HDI is measured between 0 and 1. Full Form; NABARD: National Bank for Agriculture and Rural Development: NABH: National Accreditation Board for Hospitals & Healthcare Providers: NAAC: National Assessment and Accreditation Council: NAC: Network Access Control: NASA: National Aeronautics and Space Administration: NASDAQ: National Association of Securities Dealers Automated Quotations: NATO The Democracy Index is based on five categories: electoral process and pluralism; civil liberties; the functioning of government; political participation; and political culture. Based on their scores on 60 indicators within these categories, each country is then itself classified as one of four types of regime: full democracy; flawed democracy; hybrid regime; and authoritarian regime.