Charts and averages
Lesson 8 of 10
Reading bar charts
Objective. Read and compare values from a bar chart with a scaled axis.
The key idea
Check the scale first: a gridline may be worth 2, 5 or 10. Then read the top of each bar against it.
Worked example
Gridlines go 0, 10, 20. A bar sits halfway between 10 and 20.
- 1Each gap is 10.
- 2Halfway is 5 more than 10.
Answer: 15
Practice
Each question comes with a picture and a listen button. Try it first, then reveal the answer.
Common mistake. Assuming every gridline is one unit.
Your progress
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