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US Electricity Generation vs US College Enrollment

US Electricity Generation and US College Enrollment correlate at r = +0.87 over 25 years (1985–2022), p < 0.0001. With the time trend removed, r = +0.42. Interpret with caution.

Verdict: Interpret with caution. Much of the apparent link is driven by a shared time trend: r falls from 0.87 to 0.42 once the trend is removed.

Pearson r
+0.87
p-value
< 0.0001
Years compared (n)
25 (1985–2022)
95% confidence interval
0.73 to 0.94
Correlation with the time trend removed
+0.42

Sources

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