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US Milk Consumption per Person vs US Solar Energy Consumption

US Milk Consumption per Person and US Solar Energy Consumption correlate at r = -0.54 over 41 years (1983–2023), p = 2.4e-4. With the time trend removed, r = -0.09. Interpret with caution.

Verdict: Interpret with caution. Much of the apparent link is driven by a shared time trend: r falls from -0.54 to -0.09 once the trend is removed.

Pearson r
-0.54
p-value
2.4e-4
Years compared (n)
41 (1983–2023)
95% confidence interval
-0.73 to -0.28
Correlation with the time trend removed
-0.09

Sources

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