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US Coal Consumption vs US Internet Usage
US Coal Consumption and US Internet Usage correlate at r = -0.55 over 35 years (1990–2024), p = 5.7e-4. With the time trend removed, r = +0.84. Direction flips without the trend.
Verdict: Direction flips without the trend. The raw correlation is -0.55, but once each series' time trend is removed it becomes 0.84. The year-to-year movements run the opposite way to the long-run trends, so the headline number is misleading.
- Pearson r
- -0.55
- p-value
- 5.7e-4
- Years compared (n)
- 35 (1990–2024)
- 95% confidence interval
- -0.75 to -0.27
- Correlation with the time trend removed
- +0.84
Sources
- US Coal Consumption (TWh): Our World in Data. US Coal Consumption (Our World in Data: Coal).
- US Internet Usage (% of population): Our World in Data. US Internet Usage (Our World in Data: Share of the population using the Internet).
Related pairs
- US Internet Usage vs US Internet Users (r = +1.00)
- US Internet Usage vs US Adult Obesity (r = +0.98)
- US Internet Usage vs US Mobile Subscriptions (r = +0.98)
- US Internet Usage vs US Median Age (r = +0.97)
- US Internet Usage vs US Population (r = +0.97)
- US Internet Usage vs US Infant Mortality (r = -0.96)
Correlation does not imply causation. How the verdict is worked out.