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Arctic Sea Ice Extent (September) vs US Life Expectancy
Arctic Sea Ice Extent (September) and US Life Expectancy correlate at r = -0.87 over 46 years (1979–2024), p < 0.0001. With the time trend removed, r = -0.26. Likely spurious (shared time trend).
Verdict: Likely spurious (shared time trend). Both series mostly just trend over time. After removing that trend the correlation collapses to -0.26 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.87
- p-value
- < 0.0001
- Years compared (n)
- 46 (1979–2024)
- 95% confidence interval
- -0.92 to -0.77
- Correlation with the time trend removed
- -0.26
Sources
- Arctic Sea Ice Extent (September) (million km²): NSIDC. Mean Arctic sea ice extent in September, the yearly minimum (NSIDC Sea Ice Index).
- US Life Expectancy (years): World Bank. US Life Expectancy (World Bank indicator SP.DYN.LE00.IN).
Related pairs
- US Nuclear Power Generation vs US Life Expectancy (r = +0.96)
- US Infant Mortality vs US Life Expectancy (r = -0.96)
- US Life Expectancy vs US Population (r = +0.96)
- US Median Age vs US Life Expectancy (r = +0.95)
- US Imports vs US Life Expectancy (r = +0.95)
- US Life Expectancy vs US Urban Population (r = +0.95)
Correlation does not imply causation. How the verdict is worked out.