Once each component index of the HDI is calculated for a country, the next step is to calculate the overall measure by Summing the component index

Once each component index of the HDI is calculated for a country, the next step is to calculate the overall measure by

Summing the component index values

Multiplying each of the individual values together

Taking the square root of the product of the individual index values

Taking the cubic root of the product of the individual index values