CorrelateAI › Pairs
Sydney Average Temperature vs US Birth Rate
Sydney Average Temperature and US Birth Rate correlate at r = -0.49 over 65 years (1960–2024), p < 0.0001. With the time trend removed, r = +0.10. Holds up after detrending.
Verdict: Holds up after detrending. Statistically significant (p = < 0.0001) and the association survives trend removal (detrended r = 0.10). Correlation still isn't causation, but this one isn't an obvious artifact.
- Pearson r
- -0.49
- p-value
- < 0.0001
- Years compared (n)
- 65 (1960–2024)
- 95% confidence interval
- -0.66 to -0.28
- Correlation with the time trend removed
- +0.10
Sources
- Sydney Average Temperature (°C): Open-Meteo (ERA5). Annual mean 2m air temperature for Sydney from the ERA5 reanalysis.
- US Birth Rate (per 1,000 people): World Bank. US Birth Rate (World Bank indicator SP.DYN.CBRT.IN).
Related pairs
- Atmospheric Methane (global) vs US Birth Rate (r = -0.95)
- US Adult Obesity vs US Birth Rate (r = -0.93)
- US Adolescent Birth Rate vs US Birth Rate (r = +0.92)
- US Birth Rate vs US Resident Patent Applications (r = -0.92)
- US Fertility Rate vs US Birth Rate (r = +0.91)
- US Birth Rate vs US R&D Expenditure (r = -0.91)
Correlation does not imply causation. How the verdict is worked out.