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Worldwide Major Earthquakes (M5+) vs US Population Aged 65+
Worldwide Major Earthquakes (M5+) and US Population Aged 65+ correlate at r = +0.63 over 66 years (1960–2025), p < 0.0001. With the time trend removed, r = -0.16. 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 -0.16 — the relationship is probably coincidental, not causal.
- Pearson r
- +0.63
- p-value
- < 0.0001
- Years compared (n)
- 66 (1960–2025)
- 95% confidence interval
- 0.45 to 0.75
- Correlation with the time trend removed
- -0.16
Sources
- Worldwide Major Earthquakes (M5+) (earthquakes per year): USGS. Annual worldwide count of magnitude 5+ earthquakes (USGS ComCat).
- US Population Aged 65+ (% of total): World Bank. US Population Aged 65+ (World Bank indicator SP.POP.65UP.TO.ZS).
Related pairs
- US Wind Power Generation vs US Population Aged 65+ (r = +0.99)
- US Renewable Energy Share vs US Population Aged 65+ (r = +0.96)
- US GDP per Capita vs US Population Aged 65+ (r = +0.96)
- US GDP (current US$) vs US Population Aged 65+ (r = +0.95)
- Atmospheric CO₂ (Mauna Loa) vs US Population Aged 65+ (r = +0.95)
- US Population Aged 65+ vs US R&D Expenditure (r = +0.95)
Correlation does not imply causation. How the verdict is worked out.