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US Annual Working Hours per Worker vs US Secondary School Enrollment

US Annual Working Hours per Worker and US Secondary School Enrollment correlate at r = -0.72 over 35 years (1971–2022), p < 0.0001. With the time trend removed, r = -0.39. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = < 0.0001) and the association survives trend removal (detrended r = -0.39). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
-0.72
p-value
< 0.0001
Years compared (n)
35 (1971–2022)
95% confidence interval
-0.85 to -0.51
Correlation with the time trend removed
-0.39

Sources

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