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
How much of the federal income tax does each income group pay?
The interactive chart needs JavaScript. The numbers are on the chart's page.
In tax year 2023, the 1% of tax returns with the highest incomes paid 38.4% of all federal income tax, the next 9% paid 32.1%, the next 40% paid 26.2% and the bottom 50% paid 3.3%. In tax year 2023, the top 1% reported 20.6% of all income and the bottom 50% reported 12.3%. Groups are tax returns ranked by adjusted gross income, leaving out returns of people claimed as someone's dependent; in 2023 the top 1% started at $675,602 of income and the top half at $53,801. Income tax here is what returns owed after credits, never below zero; refundable credits paid out as refunds and payroll taxes for Social Security and Medicare aren't counted. IRS figures are estimates from a sample of returns and come out about two years after the tax year.
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 · Baby names
How many babies were given your name each year since 1880?
The interactive chart needs JavaScript. The numbers are on the chart's page.
Type any name to see how many U.S. babies were given it each year since 1880, for girls or boys. Emma, shown first, went from 2,003 girls in 1880 down to 414 in 1976, then back up to a peak of 22,719 in 2003; in 2025 it was 12,754. The counts come from Social Security card applications, so the early years undercount everyone. A year with fewer than 5 babies of a name shows as 0, because Social Security leaves those names out for privacy.
How to read this chart
Each point is the number of U.S. babies given a name in one year, from Social Security card applications. Type any name to see its line, for girls or boys. These are counts, not shares, and far more babies are born today than in 1880, so a count can grow just because the country did.
Questions to discuss
- Look up your own name or a friend's. When was it most popular, and what might explain that?
- Why are counts from the 1880s lower than counts today, even for names that were very popular then?
- How could you change these counts to fairly compare a name's popularity in 1900 with today?
Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications (national data) (Public domain (U.S. government work)) · Data as of Dec 31, 2025
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