Development Index (Human)
(HDI).
Formula
HDI = f(Life Expectancy Index, Education Index, GNI per Capita Index)
Real World
Norway consistently ranks first on the UN HDI (score ~0.96) due to its high life expectancy, near-universal education, and high GNI per capita, making it a benchmark for developed-country comparison.
Exam Focus
State all three HDI components — life expectancy, education, and income — when explaining it; missing one loses a mark.
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