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US Marriage Rate vs US R&D Expenditure
US Marriage Rate and US R&D Expenditure correlate at r = -0.84 over 27 years (1996–2022), p < 0.0001. With the time trend removed, r = -0.20. 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 -0.20 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.84
- p-value
- < 0.0001
- Years compared (n)
- 27 (1996–2022)
- 95% confidence interval
- -0.92 to -0.67
- Correlation with the time trend removed
- -0.20
Sources
- US Marriage Rate (per 1,000 people): Our World in Data. US Marriage Rate (Our World in Data: Crude marriage rate).
- US R&D Expenditure (% of GDP): World Bank. US R&D Expenditure (World Bank indicator GB.XPD.RSDV.GD.ZS).
Related pairs
- US Marriage Rate vs US Adult Obesity (r = -0.98)
- Atmospheric Methane (global) vs US R&D Expenditure (r = +0.95)
- US Marriage Rate vs US Resident Patent Applications (r = -0.95)
- US Marriage Rate vs US Mobile Subscriptions (r = -0.95)
- Atmospheric Methane (global) vs US Marriage Rate (r = -0.95)
- US Wind Power Generation vs US R&D Expenditure (r = +0.95)
Correlation does not imply causation. How the verdict is worked out.