The easier method to do a more nuanced analysis is to use data visualization where you put income on one axis and lifespan on another. https://www.gapminder.org

The easier method to do a more nuanced analysis is to use data visualization where you put income on one axis and lifespan on another. https://www.gapminder.org/answers/how-does-income-relate-to-life-expectancy/ https://www.gapminder.org/answers/how-does-income-relate-to-... Interesting question though. Someone's probably thought of this already and it's just not in wide use. Maybe something like annual income in dollars cut by average life expectancy?