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US Annual CO₂ Emissions vs US Secondary School Enrollment

US Annual CO₂ Emissions and US Secondary School Enrollment correlate at r = +0.34 over 35 years (1971–2022), p = 0.047. With the time trend removed, r = -0.22. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = 0.047) and the association survives trend removal (detrended r = -0.22). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
+0.34
p-value
0.047
Years compared (n)
35 (1971–2022)
95% confidence interval
0.01 to 0.60
Correlation with the time trend removed
-0.22

Sources

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