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Bar Chart

A bar chart presents categories in rectangular bars where one axis show the categories and the other axis show the value being measured.

Example:

Election Results



Watch Out!
All the bars must add up to 100%


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A bar chart can be presented vertically or horizontally.



Since a bar chart displays categorical variables:

1. The order of the bars does not matter.



2. Gaps in between bars are fine in a bar chart.

3. You cannot describe center, skewness, or shape like you could with a histogram, for example, which displays quantitative data.

Practice: Bar Chart

What is wrong with this bar chart?