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.

  1. How many food recalls are for undeclared allergens each year?
  2. How much rarer is each step up in earthquake magnitude?
  3. How fast are US prices rising?

Printable worksheet each chart with its source, date and space to write answers

Chart 1 of 3 · Food and drug safety

How many food recalls are for undeclared allergens each year?

The interactive chart needs JavaScript. The numbers are on the chart's page.

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.

Questions to discuss

  1. In one sentence of your own, what does this chart show?
  2. Find the biggest change or difference in the chart. What might explain it?
  3. 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

Open the chart and its numbers
Cite this chart (MLA, APA, Chicago)

  • MLA

    “How Many Food Recalls Are for Undeclared Allergens Each Year?” Chartly, 4 Nov. 2026, chart.ly/charts/food-allergen-recalls-per-year. Accessed 12 Nov. 2026.

  • APA

    Chartly. (2026, November 4). How many food recalls are for undeclared allergens each year? [Chart]. Retrieved November 12, 2026, from https://chart.ly/charts/food-allergen-recalls-per-year

  • Chicago

    Chartly. “How Many Food Recalls Are for Undeclared Allergens Each Year?” Chart. Data from U.S. Food and Drug Administration, Enforcement Reports (openFDA food recall data). Updated November 4, 2026. Accessed November 12, 2026. https://chart.ly/charts/food-allergen-recalls-per-year.

Chart 2 of 3 · Earthquakes

How much rarer is each step up in earthquake magnitude?

The interactive chart needs JavaScript. The numbers are on the chart's page.

In 2025 the world recorded 6,428 earthquakes of magnitude 4.5 to 4.9, 1,983 of magnitude 5, 129 of magnitude 6, 15 of magnitude 7 and 1 of magnitude 8 or more. Each step up in magnitude is roughly ten times rarer, and releases about 32 times more energy. Countless smaller quakes go unrecorded worldwide, so the chart starts at 4.5.

How to read this chart

Each bar counts the earthquakes recorded worldwide in one year within a range of magnitudes. The bars start at zero. Each whole step up in magnitude releases about 32 times more energy, so a magnitude 7 quake is far more than one step stronger than a 6.

Questions to discuss

  1. Roughly how many times more common is each band than the one above it?
  2. The biggest bars are hard to compare with the smallest ones on this scale. What other way could you show these numbers?
  3. The chart starts at magnitude 4.5. Why might smaller earthquakes around the world go uncounted?

Source: U.S. Geological Survey, ANSS Comprehensive Earthquake Catalog (ComCat) (Public domain (U.S. government work); source U.S. Geological Survey) · Data as of Dec 31, 2025

Open the chart and its numbers
Cite this chart (MLA, APA, Chicago)

  • MLA

    “How Much Rarer Is Each Step up in Earthquake Magnitude?” Chartly, 31 Dec. 2025, chart.ly/charts/earthquakes-by-magnitude. Accessed 12 Nov. 2026.

  • APA

    Chartly. (2025, December 31). How much rarer is each step up in earthquake magnitude? [Chart]. Retrieved November 12, 2026, from https://chart.ly/charts/earthquakes-by-magnitude

  • Chicago

    Chartly. “How Much Rarer Is Each Step up in Earthquake Magnitude?” Chart. Data from U.S. Geological Survey, ANSS Comprehensive Earthquake Catalog (ComCat). Updated December 31, 2025. Accessed November 12, 2026. https://chart.ly/charts/earthquakes-by-magnitude.

Chart 3 of 3 · Inflation

How fast are US prices rising?

The interactive chart needs JavaScript. The numbers are on the chart's page.

The inflation rate was 3.7% in September 2026: how much consumer prices changed from the same month a year earlier. Each point makes that comparison, back to 1914, the first year BLS can compare. Inflation peaked at 23.7% in June 1920 and at 14.8% in March 1980; the 9.1% of June 2022 was the highest since 1981. Prices fell as fast as 15.8% a year in 1921 and 10.7% in 1932. BLS collected no prices in October 2025, during a lapse in federal funding, so that month and October 2026 are missing.

How to read this chart

Each point compares consumer prices in a month with the same month a year earlier. A value of 3 means things cost about 3% more than a year before; below zero means prices fell. The chart shows how fast prices change, not how high they are.

Questions to discuss

  1. Find two times when inflation was highest. What was happening in the country then?
  2. If inflation falls from 8% to 3%, are prices going down, or just rising more slowly?
  3. Find a stretch when the line is below zero. Why might falling prices be bad news for workers and businesses?

Source: U.S. Bureau of Labor Statistics, Consumer Price Index (CPI-U, all items) (Public domain (U.S. government work)) · Data as of Sep 30, 2026

Open the chart and its numbers
Cite this chart (MLA, APA, Chicago)

  • MLA

    “How Fast Are US Prices Rising?” Chartly, 30 Sept. 2026, chart.ly/charts/us-inflation-rate. Accessed 12 Nov. 2026.

  • APA

    Chartly. (2026, September 30). How fast are US prices rising? [Chart]. Retrieved November 12, 2026, from https://chart.ly/charts/us-inflation-rate

  • Chicago

    Chartly. “How Fast Are US Prices Rising?” Chart. Data from U.S. Bureau of Labor Statistics, Consumer Price Index (CPI-U, all items). Updated September 30, 2026. Accessed November 12, 2026. https://chart.ly/charts/us-inflation-rate.

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