How to create bar graphs for 11 plus maths
21 October 2026
Bar graphs in 11 plus maths
A bar graph is a way of showing data using bars of equal width. The height of each bar shows the value for each category. Bar graphs are important in 11+ maths because they help children organise and compare information quickly.
Collecting and organising data
Before drawing a bar graph, gather your data. Decide what you want to compare. Make a list or table showing each category and its value. Check that your data is clear and accurate.
Step-by-step: drawing a bar graph
First, choose your categories and the values to compare. Draw two axes: the horizontal axis (X-axis) for categories, and the vertical axis (Y-axis) for values. Label both axes clearly.
Next, decide on a suitable scale for the Y-axis so all values fit comfortably. Mark equal intervals.
Draw a bar for each category. Each bar should be the same width, with equal spaces between them. The height of each bar matches the value from your data.
Check your work by comparing the heights and labels. Make sure everything is neat and easy to read.
Worked example
Imagine four children read different numbers of books: Anna 5, Ben 3, Cara 7, Dan 4.
1. Categories: Anna, Ben, Cara, Dan. Values: 5, 3, 7, 4.
2. Draw the X-axis and label it with the names. Draw the Y-axis and label it 'Number of books'.
3. Choose a scale for the Y-axis (for example, 1 to 8).
4. Draw bars above each name. Anna's bar reaches 5, Ben's reaches 3, Cara's reaches 7, Dan's reaches 4.
5. Check that each bar's height matches the correct number.
The correct answer is a bar graph showing Anna 5, Ben 3, Cara 7, Dan 4.
Interpreting a bar graph
To read a bar graph, look at the height of each bar. The taller the bar, the higher the value. Compare the bars to see which category has the most or least. You can also use the graph to answer questions, such as who read the most books or how many more books Cara read than Ben (7 - 3 = 4).
Summary: key points
Bar graphs help children organise and compare data visually. For the 11+ exam, knowing how to draw and read bar graphs is an essential skill.
Key insight: Bar graphs are a simple, visual way to organise and compare information. Mastering them is important for 11+ maths success.
