Chart assignment
Charts to read and discuss
Read each chart, then answer its questions. Every chart shows its source and date; open it for a table of the numbers and the data to download.
Chart 1 of 2 · Income tax
What average income tax rate does each income group pay?
The interactive chart needs JavaScript. The numbers are on the chart's page.
In tax year 2023, the 0.1% of tax returns with the highest incomes paid 26.7% of their adjusted gross income in federal income tax, on average. The rate was 25.9% for the rest of the top 1%, 16.8% for the next 9%, 10.6% for the next 15%, 7.7% for the next 25% and 3.7% for the bottom half. The average rate is total income tax divided by total income for each group, which is lower than the top bracket rate (37%) because lower rates apply to the first dollars of income and to long-term capital gains and most dividends. It counts income tax after credits, never below zero, and leaves out payroll taxes for Social Security and Medicare, which weigh more on lower and middle incomes, as well as returns of people claimed as dependents.
Questions to discuss
- In one sentence of your own, what does this chart show?
- Find the biggest change or difference in the chart. What might explain it?
- Who collected these numbers, and how recent are they? What else would you want to know before drawing a conclusion?
Source: IRS Statistics of Income, Table 4.1 (individual returns by income percentile) (Public domain (U.S. government work)) · Data as of Dec 31, 2023
Open the chart and its numbersChart 2 of 2 · Energy
Where does US electricity come from?
The interactive chart needs JavaScript. The numbers are on the chart's page.
In 2025 natural gas made 40.8% of US electricity, followed by nuclear (17.7%) and coal (16.6%). Wind made 10.5% and solar 6.7%. Solar counts only utility-scale plants, not rooftop panels, and the 2025 figures are preliminary.
How to read this chart
Each bar is one energy source's share of all the electricity made in the U.S. in a year, so the bars add up to about 100%. The bars start at zero, so a bar twice as long means twice the share. Solar counts only large power plants, not panels on rooftops.
Questions to discuss
- Which source makes the most electricity? About how many times more than the smallest bar?
- Which of these sources burn fuel and which don't? What share of electricity comes from each group?
- Why might a chart of this kind look different in your state than for the whole country?
Source: U.S. Energy Information Administration, Monthly Energy Review (Table 7.2a) (Public domain (U.S. government work)) · Data as of Dec 31, 2025
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