Atmospheric CO₂ (Mauna Loa) vs US Egg Consumption per Person

Atmospheric CO₂ (Mauna Loa) and US Egg Consumption per Person correlate at r = -0.50 over 63 years (1961–2023), p < 0.0001. With the time trend removed, r = +0.87. Direction flips without the trend.

Verdict: Direction flips without the trend. The raw correlation is -0.50, but once each series' time trend is removed it becomes 0.87. The year-to-year movements run the opposite way to the long-run trends, so the headline number is misleading.

Pearson r: -0.50
p-value: < 0.0001
Years compared (n): 63 (1961–2023)
95% confidence interval: -0.67 to -0.29
Correlation with the time trend removed: +0.87

Sources

Atmospheric CO₂ (Mauna Loa) (ppm): NOAA GML. Annual mean atmospheric carbon dioxide measured at Mauna Loa Observatory, Hawaii (NOAA GML).
US Egg Consumption per Person (kg/year): Our World in Data. US Egg Consumption per Person (Our World in Data: Egg supply per person).

Related pairs

Atmospheric CO₂ (Mauna Loa) vs US GDP per Capita (r = +0.99)
Atmospheric CO₂ (Mauna Loa) vs US Population (r = +0.99)
Atmospheric CO₂ (Mauna Loa) vs US GDP (current US$) (r = +0.98)
Atmospheric CO₂ (Mauna Loa) vs US Cereal Yield (r = +0.98)
Atmospheric CO₂ (Mauna Loa) vs Atmospheric Methane (global) (r = +0.98)
Atmospheric CO₂ (Mauna Loa) vs US Adult Obesity (r = +0.98)

Correlation does not imply causation. How the verdict is worked out.