Answer the following questions in about 30 words.

How are countries classified on the basis of human development index?

Countries are classified into four groups on the basis of their human development scores. These are:

Very high HDI: these are countries with an HDI score of over 0.800.

High HDI: these are countries with an HDI score between 0.799 and 0.701.

Medium HDI: these are countries with an HDI score between 0.700 and 0.550.

Low HDI: these are countries with an HDI score below 0.549.