CorrelateAI › Pairs
US Birth Rate vs US Population
US Birth Rate and US Population correlate at r = -0.88 over 65 years (1960–2024), p < 0.0001. With the time trend removed, r = +0.30. 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 0.30 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.88
- p-value
- < 0.0001
- Years compared (n)
- 65 (1960–2024)
- 95% confidence interval
- -0.92 to -0.80
- Correlation with the time trend removed
- +0.30
Sources
- US Birth Rate (per 1,000 people): World Bank. US Birth Rate (World Bank indicator SP.DYN.CBRT.IN).
- US Population (people): World Bank. US Population (World Bank indicator SP.POP.TOTL).
Related pairs
- US Adult Obesity vs US Population (r = +1.00)
- Atmospheric CO₂ (Mauna Loa) vs US Population (r = +0.99)
- US Resident Patent Applications vs US Population (r = +0.98)
- US Median Age vs US Population (r = +0.98)
- US Cereal Yield vs US Population (r = +0.97)
- US GDP per Capita vs US Population (r = +0.97)
Correlation does not imply causation. How the verdict is worked out.