CorrelateAI › Pairs
Arctic Sea Ice Extent (September) vs US Median Age
Arctic Sea Ice Extent (September) and US Median Age correlate at r = -0.87 over 45 years (1979–2023), p < 0.0001. With the time trend removed, r = +0.18. Likely spurious (shared time trend).
Verdict: Likely spurious (shared time trend). Both series mostly just trend over time. After removing that trend the correlation collapses to 0.18 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.87
- p-value
- < 0.0001
- Years compared (n)
- 45 (1979–2023)
- 95% confidence interval
- -0.93 to -0.77
- Correlation with the time trend removed
- +0.18
Sources
- Arctic Sea Ice Extent (September) (million km²): NSIDC. Mean Arctic sea ice extent in September, the yearly minimum (NSIDC Sea Ice Index).
- US Median Age (years): Our World in Data. US Median Age (Our World in Data: Median age).
Related pairs
- US Median Age vs US Adult Obesity (r = +0.99)
- US Median Age vs US Population (r = +0.98)
- Atmospheric CO₂ (Mauna Loa) vs US Median Age (r = +0.97)
- US Median Age vs US Internet Users (r = +0.97)
- US Internet Usage vs US Median Age (r = +0.97)
- US Median Age vs US GDP per Capita (r = +0.97)
Correlation does not imply causation. How the verdict is worked out.