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US Marriage Rate vs US Net Migration

US Marriage Rate and US Net Migration correlate at r = -0.69 over 62 years (1960–2022), p < 0.0001. With the time trend removed, r = -0.18. Likely spurious (shared time trend).

Verdict: Likely spurious (shared time trend). Both series mostly just trend over time. After removing that trend the correlation collapses to -0.18 — the relationship is probably coincidental, not causal.

Pearson r
-0.69
p-value
< 0.0001
Years compared (n)
62 (1960–2022)
95% confidence interval
-0.80 to -0.54
Correlation with the time trend removed
-0.18

Sources

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