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US Marriage Rate vs US Milk Consumption per Person

US Marriage Rate and US Milk Consumption per Person correlate at r = +0.39 over 61 years (1961–2022), p = 0.0022. With the time trend removed, r = -0.05. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = 0.0022) and the association survives trend removal (detrended r = -0.05). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
+0.39
p-value
0.0022
Years compared (n)
61 (1961–2022)
95% confidence interval
0.15 to 0.58
Correlation with the time trend removed
-0.05

Sources

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