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US Military Expenditure vs US Population Aged 65+
US Military Expenditure and US Population Aged 65+ correlate at r = -0.78 over 65 years (1960–2024), p < 0.0001. With the time trend removed, r = +0.17. 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 0.17 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.78
- p-value
- < 0.0001
- Years compared (n)
- 65 (1960–2024)
- 95% confidence interval
- -0.86 to -0.66
- Correlation with the time trend removed
- +0.17
Sources
- US Military Expenditure (% of GDP): World Bank. US Military Expenditure (World Bank indicator MS.MIL.XPND.GD.ZS).
- 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.