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US Adult Obesity vs US R&D Expenditure
US Adult Obesity and US R&D Expenditure correlate at r = +0.77 over 28 years (1996–2023), p < 0.0001. With the time trend removed, r = -0.78. Direction flips without the trend.
Verdict: Direction flips without the trend. The raw correlation is 0.77, but once each series' time trend is removed it becomes -0.78. The year-to-year movements run the opposite way to the long-run trends, so the headline number is misleading.
- Pearson r
- +0.77
- p-value
- < 0.0001
- Years compared (n)
- 28 (1996–2023)
- 95% confidence interval
- 0.56 to 0.89
- Correlation with the time trend removed
- -0.78
Sources
- US Adult Obesity (% of adults): Our World in Data. US Adult Obesity (Our World in Data: Obesity among adults, BMI >= 30 kg/m2 (crude estimate) (%) - Sex: both sexes - Age group: 18+ years of age).
- US R&D Expenditure (% of GDP): World Bank. US R&D Expenditure (World Bank indicator GB.XPD.RSDV.GD.ZS).
Related pairs
- US Adult Obesity vs US Population (r = +1.00)
- US Median Age vs US Adult Obesity (r = +0.99)
- US Marriage Rate vs US Adult Obesity (r = -0.98)
- US Adult Obesity vs US Resident Patent Applications (r = +0.98)
- US Adult Obesity vs US Mobile Subscriptions (r = +0.98)
- US Adult Obesity vs US Internet Users (r = +0.98)
Correlation does not imply causation. How the verdict is worked out.