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US Marriage Rate vs US Forest Area
US Marriage Rate and US Forest Area correlate at r = -0.93 over 32 years (1991–2022), p < 0.0001. With the time trend removed, r = -0.10. 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 -0.10 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.93
- p-value
- < 0.0001
- Years compared (n)
- 32 (1991–2022)
- 95% confidence interval
- -0.97 to -0.87
- Correlation with the time trend removed
- -0.10
Sources
- US Marriage Rate (per 1,000 people): Our World in Data. US Marriage Rate (Our World in Data: Crude marriage rate).
- US Forest Area (% of land): World Bank. US Forest Area (World Bank indicator AG.LND.FRST.ZS).
Related pairs
- US Marriage Rate vs US Adult Obesity (r = -0.98)
- US Forest Area vs US Mobile Subscriptions (r = +0.98)
- US Forest Area vs US Resident Patent Applications (r = +0.97)
- US Adult Obesity vs US Forest Area (r = +0.97)
- US Forest Area vs US Population (r = +0.97)
- Atmospheric CO₂ (Mauna Loa) vs US Forest Area (r = +0.95)
Correlation does not imply causation. How the verdict is worked out.