Lesson 6: Displaying Data
Choosing the right graph to tell your data's story.
π― Learning Intentions
- Choose the correct graph type for different data types
- Create accurate bar graphs, pie charts, or dot plots
- Ensure all graphs have titles, labels, and keys
1. Graph Matching (10 mins)
Match the data type to the graph:
- Category Data (e.g., fav color) β Bar Graph (counts) or Pie Chart (percentages)
- Numerical Data (e.g., height) β Dot Plot or Histogram/Stem & Leaf
- Time Data (e.g., temperature over week) β Line Graph
2. Bad Graphs (10 mins)
Show examples of misleading graphs (e.g., scale not starting at zero, missing labels).
Rules for Good Graphs:
- Title - What is this about?
- Axes - Label X and Y clearly.
- Intervals - Consistent counting steps.
- Labels - What do the bars represent?
Acronym: TAIL
3. Task: Create Your Display (30 mins)
Students create at least one graph for their investigation.
Options:
- Draw by hand on graph paper (focus on precision).
- Use Google Sheets/Excel to generate a chart.
Challenge: Write one sentence below the graph describing what the "tallest bar" or "biggest slice" means.