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Arctic Sea Ice Extent (September) vs US Homicide Rate
Arctic Sea Ice Extent (September) and US Homicide Rate correlate at r = +0.67 over 31 years (1990–2023), p < 0.0001. With the time trend removed, r = +0.20. 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 0.20 — the relationship is probably coincidental, not causal.
- Pearson r
- +0.67
- p-value
- < 0.0001
- Years compared (n)
- 31 (1990–2023)
- 95% confidence interval
- 0.41 to 0.83
- Correlation with the time trend removed
- +0.20
Sources
- Arctic Sea Ice Extent (September) (million km²): NSIDC. Mean Arctic sea ice extent in September, the yearly minimum (NSIDC Sea Ice Index).
- US Homicide Rate (per 100,000 people): Our World in Data. US Homicide Rate (Our World in Data: Homicide rate per 100,000 population).
Related pairs
- US Homicide Rate vs US Rural Population (r = +0.94)
- US Homicide Rate vs US Urban Population (r = -0.94)
- Arctic Sea Ice Extent (September) vs US Mobile Subscriptions (r = -0.92)
- Arctic Sea Ice Extent (September) vs US Resident Patent Applications (r = -0.91)
- US Homicide Rate vs US Life Expectancy (r = -0.91)
- Arctic Sea Ice Extent (September) vs US Adult Obesity (r = -0.91)
Correlation does not imply causation. How the verdict is worked out.