Median income and GDP per capita correlate very strongly (.93 in one sample).
Generally, for emerging economies, growth (raising GDP per capita) seems sufficient to increase median income (https://en.wikipedia.org/wiki/A_rising_tide_lifts_all_boats).
Amongst countries with a GDP per capita > $10,000 (~Namibia), no country has a median income below the extreme poverty line (1.90*365 = $693.5).
And raising median income is sufficient and necessary to eliminate extreme poverty.
Median income and GDP per capita correlate very strongly (.93 in one sample).
Generally, for emerging economies, growth (raising GDP per capita) seems sufficient to increase median income (https://en.wikipedia.org/wiki/A_rising_tide_lifts_all_boats).
Amongst countries with a GDP per capita > $10,000 (~Namibia), no country has a median income below the extreme poverty line (1.90*365 = $693.5).
And raising median income is sufficient and necessary to eliminate extreme poverty.