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Original practice · Free Online RevisionSkill · frequency reading
A bar chart shows frequencies A=12, B=18, C=10. How many observations are represented?
Statistics & ProbabilityFoundationMaths revision
Bar Graphs and Charts
Read categorical displays critically and convert between frequencies and proportions.
Focus points
✓Read frequencies from charts.
✓Compare categories using proportions.
✓Spot misleading graphical choices.
Orin
The Wise Owl
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Practice setQuestion lineup
Try each question first, reveal a hint when you need one, then check the worked answer. Mark them done as you go — finish the set to claim your chips.
8 revision questions
Question 2FluencyCore
Original practice · Free Online RevisionSkill · proportion
Using A=12, B=18, C=10, what percentage are in category B?
Question 3FluencyCore
Original practice · Free Online RevisionSkill · pie chart
A pie chart sector is 90°. What fraction and percentage of the total does it represent?
Question 4FluencyCore
Original practice · Free Online RevisionSkill · pie-chart frequency
A survey of 240 students gives a pie-chart sector of 54° for cycling. How many cycle?
Question 5ReasoningCore
Original practice · Free Online RevisionSkill · graph criticism
A bar chart axis starts at 90 rather than 0 and bars show 96 and 100. Why can this be misleading?
Question 6FluencyCore
Original practice · Free Online RevisionSkill · pictogram
A pictogram uses one icon for 8 people. A category shows 3.5 icons. Find the frequency.
Question 7ReasoningCore
Original practice · Free Online RevisionSkill · proportion comparison
Two groups have 30 and 80 members; 12 and 24 prefer option X. Which group has the higher proportion?
Question 8ChallengeStretch
Original practice · Free Online RevisionSkill · graph design
Design a bar-chart scale for values 0–73 using a 10 cm vertical axis. Suggest a sensible interval.