For teachers. This answer key isn't linked from the students' page or worksheet; keep this link to yourself or share it with colleagues. Its numbers are the charts' current data, so they match what students see today.

Students' assignment Worksheet

Answer key · for teachers

Charts to read and discuss

Figures as of November 12, 2026, from each chart's current data.

Chart 1 of 2 · Food and drug safety

How many food recalls are for undeclared allergens each year?

The chart's answer: The FDA classified 190 food recalls in 2025 for an allergen left off the label, such as milk, peanuts, tree nuts, wheat, soy, eggs, fish, shellfish or sesame; the most since 2013 was 282 in 2017. From 2013 through 2025, undeclared allergens were the most common reason food was recalled. A recall counts once however many products it covers, in the year FDA first listed it in its weekly Enforcement Report. Chartly sorted FDA's written reasons by their key words; a recall for a germ as well counts under the germ. Meat, poultry and most egg products are USDA's to recall and aren't included. The newest allergen recalls, this year's included, are listed below.

Key numbers (Food recalls for undeclared allergens)

Questions

  1. In one sentence of your own, what does this chart show?

    Open question: answers will vary. Look for answers that use the chart's numbers and source.

  2. Find the biggest change or difference in the chart. What might explain it?

    • 2013 to 2025: up 36 (+23%)
    • Biggest rise from one point to the next: 40, 2022 to 2023
    • Biggest drop from one point to the next: 78, 2018 to 2019
  3. Who collected these numbers, and how recent are they? What else would you want to know before drawing a conclusion?

    • Newest: 190 in 2025
    • Source: U.S. Food and Drug Administration, Enforcement Reports (openFDA food recall data), data as of November 4, 2026

Source: U.S. Food and Drug Administration, Enforcement Reports (openFDA food recall data) (Public domain (U.S. government work); source U.S. Food and Drug Administration, openFDA) · Data as of Nov 4, 2026 · chart.ly/charts/food-allergen-recalls-per-year

Chart 2 of 2 · Wealth

What is the median household net worth by age?

The chart's answer: In the Federal Reserve's 2025 survey, the typical (median) household headed by someone under 35 had a net worth of $32,820, and one headed by someone 35 to 44 had $156,000. The median was $254,670 for ages 45 to 54, $411,340 for 55 to 64, $431,900 for 65 to 74 and $504,600 for 75 and over, about 15 times the under-35s'. The median is the household in the middle: half have more and half less. Averages are much higher, because a few households are very rich. Net worth is what a household owns (homes, retirement accounts, stocks, businesses, cars, bank accounts) minus what it owes (mortgages, student and car loans, credit cards). The survey is taken every three years, and figures are in dollars of the survey year. People of different ages also lived through different times, so this compares age groups, not one household's path through life.

Key numbers (Median household net worth, dollars)

Questions

  1. Which age group has the highest median net worth, and about how many times the under-35 group's is it?

    • 75 and over is about 15 times Under 35
    • Highest: $504,600 (75 and over)
    • Lowest: $32,820 (Under 35)
  2. Why might net worth keep rising through most of a working life, and why might it fall for the oldest group?

    Open question: answers will vary. Look for answers that use the chart's numbers and source.

  3. A few very rich households pull the average far above the median. Why is the median a better picture of a typical household?

    Open question: answers will vary. Look for answers that use the chart's numbers and source.

Source: Federal Reserve Board, Survey of Consumer Finances (Public domain (Federal Reserve Board; cite the Board as the source)) · Data as of Dec 31, 2025 · chart.ly/charts/median-net-worth-by-age

More free charts and assignments at chart.ly/teachers