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US Marriage Rate vs US Federal Debt Outstanding

US Marriage Rate and US Federal Debt Outstanding correlate at r = -0.73 over 128 years (1886–2022), p < 0.0001. With the time trend removed, r = -0.61. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = < 0.0001) and the association survives trend removal (detrended r = -0.61). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
-0.73
p-value
< 0.0001
Years compared (n)
128 (1886–2022)
95% confidence interval
-0.80 to -0.63
Correlation with the time trend removed
-0.61

Sources

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