Graphs

• Bar Graph


  Used to represent discrete data

  Even if there are categories with no score they should still be represented

  Columns do not touch and have equal width / spacing
• Histograms 


  Used to represent data on a continuous scale

  Columns do touch because each one forms a single score
• Scatter graph


  Used for measuring the relationship between two co-variables

  Plot an ' x ' for where the two variables meet
• Line Graph


  Used to represent data which is numerical also known as continuous data

  Can be used to make expectations about the scores between those represented on the graph