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Arctic Sea Ice Extent (September) vs US Electricity Generation
Arctic Sea Ice Extent (September) and US Electricity Generation correlate at r = -0.80 over 41 years (1985–2025), p < 0.0001. With the time trend removed, r = -0.03. 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 -0.03 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.80
- p-value
- < 0.0001
- Years compared (n)
- 41 (1985–2025)
- 95% confidence interval
- -0.89 to -0.66
- Correlation with the time trend removed
- -0.03
Sources
- Arctic Sea Ice Extent (September) (million km²): NSIDC. Mean Arctic sea ice extent in September, the yearly minimum (NSIDC Sea Ice Index).
- US Electricity Generation (TWh): Our World in Data. US Electricity Generation (Our World in Data: Total electricity).
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- US Electricity Generation vs US Internet Users (r = +0.95)
Correlation does not imply causation. How the verdict is worked out.