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.
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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.