Compare indicators
Each series on one shared axis, in its shared unit — raw levels, not rebased.
Raw levels on a shared axis (the series share one unit). eff_tax_rate_highest, fed_funds_rate · read from cache, latest-revised.
- Effective Tax Rate, Top Fifth
Average federal tax rate paid by the highest-income fifth of households.
Average federal tax rate paid by the highest income quintile (top 20% of households), CBO.
- Federal Funds Rate
The interest rate the Fed sets to steer the economy.
Effective federal funds rate, monthly average.
Each measured on its own terms — compare the lenses, not just the lines. Full lessons → Learn
…and that proves nothing. Two lines moving together is not one moving the other. Almost any pair of trending economic series correlates highly — they share the same long climb of growth, prices, and population, or it is chance. r measures co-movement over this exact window, never cause. Change the range or swap a series and watch r move. Why correlation isn’t causation →