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US Cereal Yield vs US Secondary School Enrollment
US Cereal Yield and US Secondary School Enrollment correlate at r = +0.68 over 35 years (1971–2022), p < 0.0001. With the time trend removed, r = -0.31. Direction flips without the trend.
Verdict: Direction flips without the trend. The raw correlation is 0.68, but once each series' time trend is removed it becomes -0.31. The year-to-year movements run the opposite way to the long-run trends, so the headline number is misleading.
- Pearson r
- +0.68
- p-value
- < 0.0001
- Years compared (n)
- 35 (1971–2022)
- 95% confidence interval
- 0.44 to 0.82
- Correlation with the time trend removed
- -0.31
Sources
- US Cereal Yield (kg per hectare): World Bank. US Cereal Yield (World Bank indicator AG.YLD.CREL.KG).
- US Secondary School Enrollment (% gross): World Bank. US Secondary School Enrollment (World Bank indicator SE.SEC.ENRR).
Related pairs
- Atmospheric CO₂ (Mauna Loa) vs US Cereal Yield (r = +0.98)
- US Cereal Yield vs US 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)
- US Adult Obesity vs US Cereal Yield (r = +0.95)
- US Median Age vs US Cereal Yield (r = +0.95)
Correlation does not imply causation. How the verdict is worked out.