- Purpose: Compare different categories or groups
- Axes: Categories on horizontal axis, frequencies on vertical axis
- Bar width: All bars should be equal width
- Bar spacing: Equal gaps between bars
- Scale: Must start at zero and be evenly spaced
- Labels: Clear titles and axis labels are essential
- Data type: Used for discrete (categorical) data
This key facts covers Key Facts About Bar Charts within Bar Charts & Pictograms for GCSE Mathematics. Revise Bar Charts & Pictograms in Statistics for GCSE Mathematics with 11 exam-style questions and 20 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 2 of 11 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Bar Charts & Pictograms
In a pictogram, the key shows that one symbol represents 4 people. A row shows 3 and a half symbols. How many people does this row represent?
A dual bar chart shows the test scores of boys and girls in three subjects: - Maths: Boys = 65, Girls = 72 - English: Boys = 58, Girls = 70 - Science: Boys = 71, Girls = 68 In which subject is the difference between boys' and girls' scores the greatest?