CorrelateAI › Pairs
US Forest Area vs US Population
US Forest Area and US Population correlate at r = +0.97 over 34 years (1990–2023), p < 0.0001. With the time trend removed, r = +0.35. Interpret with caution.
Verdict: Interpret with caution. Much of the apparent link is driven by a shared time trend: r falls from 0.97 to 0.35 once the trend is removed.
- Pearson r
- +0.97
- p-value
- < 0.0001
- Years compared (n)
- 34 (1990–2023)
- 95% confidence interval
- 0.93 to 0.98
- Correlation with the time trend removed
- +0.35
Sources
- US Forest Area (% of land): World Bank. US Forest Area (World Bank indicator AG.LND.FRST.ZS).
- US Population (people): World Bank. US Population (World Bank indicator SP.POP.TOTL).
Related pairs
- US Adult Obesity vs US Population (r = +1.00)
- Atmospheric CO₂ (Mauna Loa) vs US Population (r = +0.99)
- US Resident Patent Applications vs US Population (r = +0.98)
- US Median Age vs US Population (r = +0.98)
- US Forest Area vs US Mobile Subscriptions (r = +0.98)
- US Cereal Yield vs US Population (r = +0.97)
Correlation does not imply causation. How the verdict is worked out.