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US Forest Area vs US GDP (current US$)
US Forest Area and US GDP (current US$) correlate at r = +0.92 over 34 years (1990–2023), p < 0.0001. With the time trend removed, r = -0.52. Direction flips without the trend.
Verdict: Direction flips without the trend. The raw correlation is 0.92, but once each series' time trend is removed it becomes -0.52. The year-to-year movements run the opposite way to the long-run trends, so the headline number is misleading.
- Pearson r
- +0.92
- p-value
- < 0.0001
- Years compared (n)
- 34 (1990–2023)
- 95% confidence interval
- 0.84 to 0.96
- Correlation with the time trend removed
- -0.52
Sources
- US Forest Area (% of land): World Bank. US Forest Area (World Bank indicator AG.LND.FRST.ZS).
- US GDP (current US$) (USD): World Bank. US GDP (current US$) (World Bank indicator NY.GDP.MKTP.CD).
Related pairs
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- US Forest Area vs US Mobile Subscriptions (r = +0.98)
- Atmospheric Methane (global) vs US GDP (current US$) (r = +0.98)
- US Federal Debt Outstanding vs US GDP (current US$) (r = +0.97)
- US GDP (current US$) vs US Resident Patent Applications (r = +0.97)
Correlation does not imply causation. How the verdict is worked out.