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US Marriage Rate vs US Oil Consumption

US Marriage Rate and US Oil Consumption correlate at r = -0.49 over 57 years (1965–2022), p = 1.3e-4. With the time trend removed, r = +0.41. Direction flips without the trend.

Verdict: Direction flips without the trend. The raw correlation is -0.49, but once each series' time trend is removed it becomes 0.41. The year-to-year movements run the opposite way to the long-run trends, so the headline number is misleading.

Pearson r
-0.49
p-value
1.3e-4
Years compared (n)
57 (1965–2022)
95% confidence interval
-0.66 to -0.26
Correlation with the time trend removed
+0.41

Sources

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