It's one thing to have data to demonstrate your point, it's another to communicate it effectively. Here are types of charts and graphs with explanations of when to use (and not use) each.

Pie charts Pie charts are represented as a circle divided into segments. A full pie chart represents 100% and each slice, or segment, shows what proportion that category is of the whole.

Learn how to interpret and construct graphs in this guide for students aged 11 to 14 from BBC Bitesize.