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Exit presentation

Data Handling and Presentation

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One mark for cycle, one for bus, one for walk. That list of marks is a tally. It shows the answers quickly.

Figure 1 — one stroke for every answer, grouped in fives.

This is Chapter 4, Data Handling and Presentation, in your book.

What you will learn

  • What is data — collected facts, not a guess.
  • Tally marks — one stroke each time, in groups of five.
  • Pictographs — a picture means a number. The key, a note beside the graph, says which number. Check it first.
  • Bar graphs — a bar's length shows a count. The scale says how much one square counts for. Check it first.
  • Reading graphs — find answers in a graph.
  • Choosing — pick the chart that fits your data.

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This track

  1. 0 Start here
  2. 1 What counts as data
  3. 2 Counting as it happens, in fives
  4. 3 A picture that stands for many
  5. 4 A bar tells you a count, if you read the scale
  6. 5 Reading a graph someone else drew
  7. 6 Picking the right picture
  8. 7 The big picture
  9. 8 Track quiz

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