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Course: Statistics and probability > Unit 1
Lesson 1: Analyzing one categorical variable- Individuals, variables, and categorical & quantitative data
- Reading pictographs
- Read picture graphs (multi-step problems)
- Reading bar graphs
- Reading bar graphs: Harry Potter
- Creating a bar graph
- Create bar graphs
- Reading bar charts: comparing two sets of data
- Read bar graphs (2-step problems)
- Reading bar charts: putting it together with central tendency
- Reading pie graphs (circle graphs)
- Picture graphs (pictographs) review
- Bar graphs review
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Bar graphs review
Bar graphs are a nice way to visualize categorical data. This article reviews how to create and read bar graphs.
A bar graph is a nice way to display categorical data.
For example, imagine a P.E. teacher has soccer balls, footballs, tennis balls, and volleyballs. We can display this data in a bar graph:
Notice how the height of the bar above "soccer" is units to show that there are soccer balls. And the bar above "tennis" is units high to show that there are tennis balls. The "football" and "volleyball" bars work in the same way.
Want to learn more about bar graphs? Check out this video.
Practice set 1: making bar graphs
Want to practice more problems like these? Check out this exercise.
Practice set 2: reading bar graph
Want to practice more problems like these? Check out this exercise and this more advanced exercise.
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