Human Development Index (HDI)

1. Knowledge: First an educational component made up of two statistics – mean years of schooling and expected years of schooling 2. Long and healthy life: Second a life expectancy component is calculated using a minimum value for life expectancy of 25 years and maximum value of 85 years. 3. A decent standard of living: The final element is gross national income (GNI) per capita adjusted to purchasing power parity standard (PPP).