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Atmospheric Methane (global) vs US Life Expectancy
Atmospheric Methane (global) and US Life Expectancy correlate at r = +0.79 over 41 years (1984–2024), p < 0.0001. With the time trend removed, r = -0.57. Direction flips without the trend.
Verdict: Direction flips without the trend. The raw correlation is 0.79, but once each series' time trend is removed it becomes -0.57. The year-to-year movements run the opposite way to the long-run trends, so the headline number is misleading.
- Pearson r
- +0.79
- p-value
- < 0.0001
- Years compared (n)
- 41 (1984–2024)
- 95% confidence interval
- 0.64 to 0.88
- Correlation with the time trend removed
- -0.57
Sources
- Atmospheric Methane (global) (ppb): NOAA GML. Global annual mean atmospheric methane from marine surface sites (NOAA GML).
- US Life Expectancy (years): World Bank. US Life Expectancy (World Bank indicator SP.DYN.LE00.IN).
Related pairs
- Atmospheric Methane (global) vs US Natural Gas Consumption (r = +0.98)
- Atmospheric Methane (global) vs US GDP per Capita (r = +0.98)
- Atmospheric CO₂ (Mauna Loa) vs Atmospheric Methane (global) (r = +0.98)
- Atmospheric Methane (global) vs US GDP (current US$) (r = +0.98)
- Atmospheric Methane (global) vs US Median Age (r = +0.97)
- US Nuclear Power Generation vs US Life Expectancy (r = +0.96)
Correlation does not imply causation. How the verdict is worked out.