Concept 4 of 10Foundation
Watch on YouTubeVideoBar graphs
A bar graph has:
- Categories on one axis (usually x-axis)
- Numbers on the other axis (y-axis)
- Equal-width bars; only the HEIGHT changes
- A title and labels on both axes with units
Scale matters: "1 cm = 50 students" means a 4-cm bar represents 200 students.
Example
Scale: 1 unit = 10 books. A bar 5.5 units tall represents 55 books sold.
💡 Tip:Bars should NOT touch each other in a bar graph (unlike a histogram).
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5 questions to check what you just read.
0 / 5
- Q1.In a bar graph, 1 cm = 50 students. A bar 4.5 cm tall represents:
- Q2.Bars in a bar graph should:
- Q3.A good bar graph always has:
- Q4.Tallest bar represents:
- Q5.Bar graph differs from pictograph in: