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 · Interest rates
When has the Treasury yield curve been inverted?
The interactive chart needs JavaScript. The numbers are on the chart's page.
The yield curve is inverted when short-term Treasury rates are higher than long-term ones: lending to the government for 2 years pays more a year than lending for 10. On this chart that is anything below zero. In October 2026 the 10-year rate minus the 2-year rate was 0.39 percentage points. Through mid-2026, the longest inversion in these monthly averages lasted 26 months, from July 2022 to August 2024, and the deepest was in March 1980, when the 2-year rate was 2.13 points higher. Inversions have tended to come after the Federal Reserve raised short-term rates quickly, while investors expected rates to fall later. The chart starts in June 1976, when the 2-year rate begins.
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: Federal Reserve Board, H.15 Selected Interest Rates (monthly averages) (Public domain (Federal Reserve Board; cite the Board as the source)) · Data as of Oct 31, 2026
Open the chart and its numbersChart 2 of 2 · Income and poverty
What is the typical household income in each state?
The interactive chart needs JavaScript. The numbers are on the chart's page.
In the Census Bureau's 5-year survey ending in 2024, the typical household in District of Columbia earned $109,870 a year, the most, followed by Massachusetts ($103,960) and Maryland ($103,678). Mississippi was lowest at $56,447, and the U.S. median was $80,734. These are 5-year estimates in 2024 dollars, each with a margin of error.
How to read this chart
Each bar is the median household income in a state: half of households earn more and half earn less. The dashed line is the whole U.S., for comparison. These are survey estimates, and each has a margin of error: the true value is likely within that range, so states with overlapping ranges may not really differ.
Questions to discuss
- Find your state. Is it above or below the U.S. median, and by about how much?
- Why do statisticians often use the median instead of the average (mean) for income?
- Housing and groceries cost more in some states. What would you need to know to compare what these incomes can buy?
Source: U.S. Census Bureau, American Community Survey 5-year estimates (Public domain (U.S. government work). This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.) · Data as of Dec 31, 2024
Open the chart and its numbersTeachers: make your own chart assignment, or change this one. Free, no account needed.