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US Solar Energy Consumption vs US Military Expenditure

US Solar Energy Consumption and US Military Expenditure correlate at r = -0.40 over 42 years (1983–2024), p = 0.0084. With the time trend removed, r = +0.18. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = 0.0084) and the association survives trend removal (detrended r = 0.18). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
-0.40
p-value
0.0084
Years compared (n)
42 (1983–2024)
95% confidence interval
-0.63 to -0.11
Correlation with the time trend removed
+0.18

Sources

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Correlation does not imply causation. How the verdict is worked out.