Types of graphs and charts

The type of graph you use depends on the type of data you want to represent.


  • Discrete data is best represented using bar charts.
  • Temperature graphs would usually be line graphs because the data is continuous.
  • When you are graphing percentages of a distribution a pie chart would be suitable.
  • When you have two variables, such as marks in a Maths test and marks in a Science test, then a scatter diagram would be the one to use.

The other thing you need to remember is that all graphs need ‘SALT’. Make sure you remember the following information:

S = Scale

A = Axes

L = Labels

T = Title