Gross National Income (GNI) per capita is based on purchasing power parity, converted into international dollars. One international dollar has the same purchasing power as one U.S. dollar in the U.S. The EF EPI countries' 2013 global average was 27,845 USD, ranging from 2,890 USD (Cambodia) to 128,530 USD (Qatar).
Internet Penetration signifies the percentage of people in a country with access to the Internet. EF EPI countries' 2014 global average was 56.8%, with the range of 6.0% (Cambodia) to 95.1% (Norway).
This World Bank statistic refers to the percentage of total government expenditure dedicated to education. The global average for EF EPI countries from 2010 to 2013 was 14.0%, with the range being 7.3% (Azerbaijan) to 31.3% (Thailand).
UN Human Development Reports, 2013
Mean Years of Schooling is the “average number of years of education received by people aged 25 and older, converted from education attainment levels using the official duration of each level.” The EF EPI countries' 2013 global mean was 9.2 years, with the range of 2.5 (Yemen) to 12.9 (Germany).