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US Median Age vs US Imports

US Median Age and US Imports correlate at r = +0.93 over 54 years (1970–2023), p < 0.0001. With the time trend removed, r = +0.48. Interpret with caution.

Verdict: Interpret with caution. Much of the apparent link is driven by a shared time trend: r falls from 0.93 to 0.48 once the trend is removed.

Pearson r
+0.93
p-value
< 0.0001
Years compared (n)
54 (1970–2023)
95% confidence interval
0.87 to 0.96
Correlation with the time trend removed
+0.48

Sources

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