Key learning points

1. Data can be hard to compare when presented in differing formats.
2. Being able to convert/interpret differing representations is useful.
3. It is important to identify the most efficient form for the data to be in to compare it.

Keywords

• Bar chart - A bar chart (bar graph) is a graph consisting of bars visually representing the frequency of objects or groups.

• Pie chart - A pie chart (pie graph) is a circular graph where sectors represent different groups proportionally.

• Stem and leaf diagram - A stem and leaf diagram is a systematic way to visually organise and represent numerical data.

Common misconception