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US Renewable Energy Share vs US Secondary School Enrollment

US Renewable Energy Share and US Secondary School Enrollment correlate at r = +0.66 over 35 years (1971–2022), p < 0.0001. With the time trend removed, r = -0.17. 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 -0.17 — the relationship is probably coincidental, not causal.

Pearson r
+0.66
p-value
< 0.0001
Years compared (n)
35 (1971–2022)
95% confidence interval
0.42 to 0.82
Correlation with the time trend removed
-0.17

Sources

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