← Class 6 unitsComputational Thinking
Class 6
Chapter 4: Data Handling and Presentation
Different charts answer different questions. Bar charts compare categories; line charts show change over time; pie charts show parts of a whole.
Learning outcomes
- Organise data into tables and charts
- Choose an appropriate chart for a question
Activities
- Survey & bar graph project
Worked examples
Read through these first, then try the practice below.
Example 1 — Best chart
You want to show how the temperature changed every hour for a day. Which chart is best?
Solution: A line chart — it shows change over time.
Example 2 — Find the mode
In the list 4, 7, 7, 8, 9, 7, 5, what is the mode?
Solution: The most frequent value is 7. So the mode is 7.
Self-do practice
Question 1 of 3 · Score 0/0Which chart is best for showing parts of a whole?
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