Question

what are the main index to measure development​

Answer 1

The HDI has two main features:

A scale from 0 (no development) to 1 (complete development). An index, which is based on three equally weighted components: Longevity, measured by life expectancy at birth. ... Standard of living, measured by real GDP per capita at purchasing power parity.

Answer 2

Answer:

The Human Development Index (HDI) is a statistic composite index of life expectancy, education, and per capita income indicators, which are used to rank countries into four tiers of human development.