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Sydney Average Temperature vs US Infant Mortality

Sydney Average Temperature and US Infant Mortality correlate at r = -0.51 over 65 years (1960–2024), p < 0.0001. With the time trend removed, r = +0.13. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = < 0.0001) and the association survives trend removal (detrended r = 0.13). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
-0.51
p-value
< 0.0001
Years compared (n)
65 (1960–2024)
95% confidence interval
-0.67 to -0.31
Correlation with the time trend removed
+0.13

Sources

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