A long and healthy life: Life expectancy at birth
Education index: Mean years of schooling and Expected years of schooling
A decent standard of living: GNI per capita (PPP US$)
In its 2010 Human Development Report, the UNDP began using a new method of calculating the HDI. The following three indices are used:
1. Life Expectancy Index (LEI) = \frac{\textrm{LE} - 20}{82.3-20}
2. Education Index (EI) = \frac{\sqrt{\textrm{MYSI} \cdot \textrm{EYSI}}} {0.951}
2.1 Mean Years of Schooling Index (MYSI) = \frac{\textrm{MYS}}{13.2}[7]
2.2 Expected Years of Schooling Index (EYSI) = \frac{\textrm{EYS}}{20.6}[8]
3. Income Index (II) = \frac{\ln(\textrm{GNIpc}) - \ln(100)}{\ln(107,721) - \ln(100)}
Finally, the HDI is the geometric mean of the previous three normalized indices:
\textrm{HDI} = \sqrt[3]{\textrm{LEI}\cdot \textrm{EI} \cdot \textrm{II}}.
But as usual, Our dear OP's eyes are glued on the lollipop "Inferiority Complex" 
