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US Dollar to Japanese Yen vs US GDP (current US$)

US Dollar to Japanese Yen and US GDP (current US$) correlate at r = +0.54 over 27 years (1999–2025), p = 0.0037. With the time trend removed, r = +0.82. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = 0.0037) and the association survives trend removal (detrended r = 0.82). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
+0.54
p-value
0.0037
Years compared (n)
27 (1999–2025)
95% confidence interval
0.20 to 0.76
Correlation with the time trend removed
+0.82

Sources

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