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Data and Graphs

Expert⏱ 28 min
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A bar chart uses tall and short bars to show and compare different amounts of information.

is that we and . You how many each , or the each day for a .

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A is a way to : , then through them with a to make a of 5. of 5 are to add up.

Tally marks are bundled into groups of five to make counting data quick and easy.
FruitTally (groups of 5)Total
Apple||||| |||8
Banana|||||5
Orange|||3
Grapes||||| |6
A tally chart of favourite fruit. Each group of five is one full gate, so the totals are easy to count.

A bar to . The of each bar you the . The you what is being and what is used. For , a bar up to 8 a of 8.

The same fruit data as a bar chart. The tallest bar — apple — is the most popular choice (the mode).

Quiz time! 📝

Data and Graphs Quiz

Question 1 of 5

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How do you the of 4, 6, and 8?

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24688Apple5Banana3Orange6GrapesChildren (votes)

🔗 Match each type of graph or chart to what it is best for.

  • Bar chart

  • Pictogram

  • Tally chart

  • Line graph

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the key () on a . If one 2 , then 4 8 (4 × 2 = 8).

A pictogram uses rows of little pictures or symbols to represent amounts of data.
A pictogram of the same idea: each 🧒 stands for 2 children, so apple's 4 symbols mean 8 children.

a bar the top of a bar and to the . If the up in 2s (0, 2, 4, 6, 8) and a bar the 6, its is 7 only if there are — it on 6 or 8. the of each .

✍️ A tally shows four full groups of five plus three more strokes.

of 5 is , 3 more makes in .

The is the that most in a set. If 10 for , 6 for , and 4 for , the is (the most ). The is the between the and : 10 − 4 = 6.

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The () is by all and by how many there are. The of 4, 6, and 8 is (4+6+8) ÷ 3 = 18 ÷ 3 = 6.

🔗 Match each word to what it means in data.

  • Mode

  • Range

  • Mean

  • Key

✍️ Answer these data questions.

In a set of with 3, 7, and 5, the is and the is .

When you to a , like "What is your pet?", you are a . the into a or makes it to see which was most and which was .

A line graph shows how temperature goes up and down over many different days.
A line graph is best for change over time. Here the temperature (°C) rises to a peak on day 3, then falls. The sideways axis is the day number.

🧩 Put the steps of a data survey in the right order.

  1. Read the chart to answer the question
  2. Draw a bar chart or pictogram
  3. Collect answers using a tally chart
  4. Decide on a question to ask

🗂️ Sort each term into the correct category.

  • Bar chart

  • Mean

  • Pictogram

  • Mode

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