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US Energy Use per Capita vs US Population

US Energy Use per Capita and US Population correlate at r = -0.35 over 61 years (1965–2025), p = 0.0050. With the time trend removed, r = -0.06. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = 0.0050) and the association survives trend removal (detrended r = -0.06). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
-0.35
p-value
0.0050
Years compared (n)
61 (1965–2025)
95% confidence interval
-0.56 to -0.11
Correlation with the time trend removed
-0.06

Sources

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