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.
Answer key · for teachers
Figures as of November 12, 2026, from each chart's current data.
Chart 1 of 3 · Food and drug safety
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.
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.
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: 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 3 · Baby names
The chart's answer: 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.
Look up your own name or a friend's. When was it most popular, and what might explain that?
Answers depend on what each student looks up on the chart.
Why are counts from the 1880s lower than counts today, even for names that were very popular then?
Answers depend on what each student looks up on the chart.
How could you change these counts to fairly compare a name's popularity in 1900 with today?
Answers depend on what each student looks up on the chart.
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 · chart.ly/charts/baby-name-popularity
Chart 3 of 3 · World
The chart's answer: 73.6% of the world's people used the internet in 2025, up from 15.6% in 2005, the first year the World Bank gives a world figure. It counts people who used the internet at least once in the previous three months. The world figures are estimates by the International Telecommunication Union.
About what share of the world was online in the first year on the chart, and in the latest year?
Did the share grow faster in some years than others? What could have sped it up?
Using the internet once in three months counts here. What does this number leave out about how people get online?
Open question: answers will vary. Look for answers that use the chart's numbers and source.
Source: World Bank, World Development Indicators: Individuals using the Internet (% of population) (CC BY 4.0 (credit the World Bank)) · Data as of Dec 31, 2025 · chart.ly/charts/world-internet-use
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