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Worldwide Major Earthquakes (M5+) vs US Forest Area

Worldwide Major Earthquakes (M5+) and US Forest Area correlate at r = +0.48 over 34 years (1990–2023), p = 0.0045. With the time trend removed, r = +0.51. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = 0.0045) and the association survives trend removal (detrended r = 0.51). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
+0.48
p-value
0.0045
Years compared (n)
34 (1990–2023)
95% confidence interval
0.16 to 0.70
Correlation with the time trend removed
+0.51

Sources

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