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 share of federal income tax do the top 1% of earners pay?
The interactive chart needs JavaScript. The numbers are on the chart's page.
The 1% of tax returns with the highest incomes paid 38.4% of all federal income tax in tax year 2023, up from 33.2% in 2001. Their share reached 45.8% in 2021, a year of unusually large capital gains, and it tends to rise and fall with the stock market because top incomes include more investment income. Returns are ranked by adjusted gross income, leaving out those of people claimed as dependents. Income tax is what returns owed after credits, never below zero, not counting payroll taxes; tax law also changed over these years, notably in 2013 and 2018. IRS figures are estimates from a sample of returns.
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 · Health
How long do Americans live, and how has that changed since 1900?
The interactive chart needs JavaScript. The numbers are on the chart's page.
A baby born in the US in 2018 could expect to live 78.7 years, up from 47.3 in 1900. The sharpest drop was in 1918, to 39.1 years, during the influenza pandemic. This CDC dataset stops at 2018; later NCHS reports put life expectancy at 78.4 years in 2023 and 79.0 in 2024, after a fall during the COVID-19 pandemic.
How to read this chart
Each point is how long a baby born in that year could expect to live, if death rates stayed as they were that year. It is an average, so it is pulled down a lot when many babies and young people die. Hover or tap a point to read its year and value.
Questions to discuss
- Find the sharpest drop on the chart. What happened in the world that year?
- Life expectancy in 1900 was under 50. Does that mean most adults died in their 40s? What else could lower the average?
- What changes in medicine, food or public health could explain the long rise?
Source: CDC National Center for Health Statistics, Death rates and life expectancy at birth (Public domain (U.S. government work)) · Data as of Dec 31, 2018
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