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Year 8 - Maths

Constructing scatter graphs by utilising technology

Graphical representations of data

Unit Summary

In this unit pupils will interpret and construct a range of representations of data including bar charts, pie charts and scatter graphs.

Lesson Summary

You will learn to construct scatter graphs from data presented in a number of different ways using technology.

Key Notes

  • Scatter graphs can be constructed quickly using spreadsheets.
  • Scatter graphs can be constructed quickly using Desmos.
  • Changing which axis is used for which variable affects how the scatter graph appears.

Vocabulary To Learn

  • Scatter graph: A visual representation for bivariate data. It can be useful when determining the nature of the relationship between the two variables

Common Mistakes To Avoid

  • Pupils may struggle to assign the correct variable to the y-axis when graphing on a spreadsheet.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

Scatter graphs can be constructed quickly using spreadsheets. Scatter graphs can be constructed quickly using Desmos.

2. Use this key word in a maths sentence and explain it clearly. 'Scatter graph'

A visual representation for bivariate data. It can be useful when determining the nature of the relationship between the two variables. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Pupils may struggle to assign the correct variable to the y-axis when graphing on a spreadsheet. Correction: Explain that the word "series" is used to mean the y-axis in this software.

More Lessons In This Unit

Browse all guides in the Year 8 Maths guide library.