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Sydney Average Temperature vs US Milk Consumption per Person

Sydney Average Temperature and US Milk Consumption per Person correlate at r = -0.36 over 63 years (1961–2023), p = 0.0040. With the time trend removed, r = -0.09. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = 0.0040) and the association survives trend removal (detrended r = -0.09). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
-0.36
p-value
0.0040
Years compared (n)
63 (1961–2023)
95% confidence interval
-0.56 to -0.12
Correlation with the time trend removed
-0.09

Sources

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