When there are only two sub-groups (as in the above image), the graph is called a double bar graph. Like regular bar charts, grouped bar charts can also be drawn with horizontal bars. A separate colored bar represents each sub-group: blue for age 70-79 and red for age 80-100.Ī key or legend is usually included to let you know what each sub-category is. In the above image, the categories are issues that senior citizens face (hearing loss and mobility issues) the sub-groups are age. Image: .Ī grouped bar graph is a way to show information about sub-groups of the main categories. Categories are on the x-axis.īar chart with horizontal bars. It doesn’t matter which type you use-it’s a matter of choice (and perhaps how much room you have on your paper!).Ī bar chart with vertical bars. Bar Graph Examples (Different Types)Ī bar graph compares different categories. If you have continuous data, like people’s weights or IQ scores, a histogram is best. You could use a bar graph if you want to track change over time as long as the changes are significant (for example, decades or centuries). It’s also a good choice when you want to compare things between different groups. Plot discrete data on a bar chart, and plot continuous data on a histogram What’s the difference between discrete and continuous data?).Ī bar chart is used for when you have categories of data: Types of movies, music genres, or dog breeds.
see the video? Click here.īack to Top Difference Between a Histogram and a Bar ChartĪlthough they look the same, bar charts and histograms have one important difference: they plot different types of data.
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