Topic summaryLife Expectancy Index Expand Summary Extracted from the Wikipedia article Human Development Index. Old method (HDI before 2010)Life Expectancy Index=LE−2585−25=LE−2560{\displaystyle ={\frac {{\text{LE}}-25}{85-25}}={\frac {{\text{LE}}-25}{60}}}Education Index=23×ALI+13×GEI{\displaystyle ={\frac {2}{3}}\times {\text{ALI}}+{\frac {1}{3}}\times {\text{GEI}}}Adult Literacy Index (ALI) =ALR−0100−0=ALR100{\displaystyle ={\frac {{\text{ALR}}-0}{100-0}}={\frac {\text{ALR}}{100}}}Gross Enrollment Index (GEI) =CGER−0100−0=CGER100{\displaystyle ={\frac {{\text{CGER}}-0}{100-0}}={\frac {\text{CGER}}{100}}} Wikipedia source