CorrelateAI › Pairs
US Cereal Yield vs US Rural Population
US Cereal Yield and US Rural Population correlate at r = -0.93 over 64 years (1961–2024), p < 0.0001. With the time trend removed, r = +0.02. 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 0.02 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.93
- p-value
- < 0.0001
- Years compared (n)
- 64 (1961–2024)
- 95% confidence interval
- -0.96 to -0.89
- Correlation with the time trend removed
- +0.02
Sources
- US Cereal Yield (kg per hectare): World Bank. US Cereal Yield (World Bank indicator AG.YLD.CREL.KG).
- US Rural Population (% of total): World Bank. US Rural Population (World Bank indicator SP.RUR.TOTL.ZS).
Related pairs
- US Rural Population vs US Urban Population (r = -1.00)
- Atmospheric CO₂ (Mauna Loa) vs US Cereal Yield (r = +0.98)
- US Cereal Yield vs US Population (r = +0.97)
- US Population vs US Rural Population (r = -0.97)
- US Cereal Yield vs US GDP per Capita (r = +0.97)
- US Cereal Yield vs US GDP (current US$) (r = +0.96)
Correlation does not imply causation. How the verdict is worked out.