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Answer questions from data displays

Interpreting picture graphs and bar graphs involves reading titles, category labels, scales, and units to determine exact quantities, including when one picture or interval represents more than one item. The reasoning includes comparing categories, finding how many more or fewer, and answering one- and two-step questions by adding or subtracting displayed values; averages, proportions, and more complex statistical analysis are not included.

Detailed Explanation: Answer questions from data displays

When you read a data display, look at:

  1. The title to learn what the graph is about.
  2. The category labels to see what is being compared.
  3. The key or scale to know how much each picture, bar, or interval represents.
  4. The data to find the numbers you need.

Here is a picture graph.

Books Read

StudentBooks
Mia📘 📘 📘
Luis📘 📘 📘 📘 📘

Key: Each 📘 represents 22 books.

Question: How many more books did Luis read than Mia?

Step 1: Find Mia’s number.
Mia has 33 pictures. Each picture represents 22 books:

3×2=63 \times 2 = 6

Mia read 66 books.

Step 2: Find Luis’s number.
Luis has 55 pictures:

5×2=105 \times 2 = 10

Luis read (10)(10) books.

Step 3: Subtract to compare.

10−6=410 - 6 = 4

Answer: Luis read 4\boxed{4} more books than Mia.

Learn by doing: Answer questions from data displays

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    Graphing - Bar Graph (Double) - Total Overall

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