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US Air Passengers Carried vs US Energy Use per Capita

US Air Passengers Carried and US Energy Use per Capita correlate at r = -0.41 over 54 years (1970–2023), p = 0.0024. With the time trend removed, r = +0.47. Direction flips without the trend.

Verdict: Direction flips without the trend. The raw correlation is -0.41, but once each series' time trend is removed it becomes 0.47. The year-to-year movements run the opposite way to the long-run trends, so the headline number is misleading.

Pearson r
-0.41
p-value
0.0024
Years compared (n)
54 (1970–2023)
95% confidence interval
-0.61 to -0.15
Correlation with the time trend removed
+0.47

Sources

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