For this example, call the graph “Pet ownership (per 1,000 households). For this example problem, label the x-axis “Pet Types” and then label the Y-axis with what the Y-axis represents: “Number of pets (per 1,000 households).” Finally, give your graph a name. Step 3: Label the X-axis with what the bars represent. Don’t forget to label each bar under the x-axis. The height of the bar should be even with the correct number on the Y-axis. The highest number in the study is 8,000,000 and the lowest is 1,000,000 so it makes sense to label the Y-axis from 0 to 8. So the number of pets is the dependent variable. In this example question, the study wanted to know how many pets were in U.S. The dependent variable is the one being tested in an experiment. Step 1: Number the Y-axis with the dependent variable.
#Bar graph builder how to#
Here’s how to do it.Įxample problem: Make a bar graph that represents exotic pet ownership in the United States. If you’re just starting to learn how to make a bar graph, you’ll probably be asked to draw one by hand on graph paper at first.
Need help with a homework question? Check out our tutoring page! By Hand For more on this particular type of graph, see: Segmented Bar Charts. They should represent 100% on each of the bars or else it’s going to be an ordinary stacked bar chart. Stacked bar charts can also show negative values negative values are displayed below the x-axis.Ī type of stacked bar chart where each bar shows 100% of the discrete value. Have data that naturally falls into components, like:.Are interested in showing how the proportions between groups related to each other, in addition to the total of each group.This type of chart is a good choice if you: Like the double bar chart, different colors represent different sub-groups. Stacked bar chart showing list price change announcements by company. Stacked bar chart showing list price change announcements by company.Įach bar shows the total for sub-groups within each individual category. It’s possible to have as many sub-groups as you like, although too many can make the graph look cluttered.Ī stacked bar chart also shows sub-groups, but the sub-groups are stacked on the same bar. 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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