Double Bar Graph (original) (raw)
Last Updated : 23 Jul, 2025
Double Bar Graph is a graph used to relate two similar types of quantities. The representation of the double bar graph contains two bars to compare the required quantities. In this article we will explore the double bar graph, double bar graph definition, and double bar graph representation. We will also discuss how to draw double bar graphs and solve some examples related to double bar graphs. Let's start our learning on the topic "Double Bar Graph."
Double Bar Graph
A double bar graph, also known as a double-bar chart, is a type of graph that displays two sets of data side by side for easy comparison.
Instead of having one set of bars representing the data, there are two sets, each corresponding to a different category or group. The bars are typically placed next to each other, making it simple to compare the values between the two groups.
**Note: Each set of bars in a double bar graph is typically color-coded or labeled to differentiate between the two groups being compared. This makes it easy for viewers to understand the comparison being made.
Double Bar Graph Definition
A double bar graph is a graphical representation of two sets of data on the same graph.
In other words, the representation of comparable quantities using graph with two bars is referred to as double bar graph. It involves using two parallel bars of varying heights to represent and compare data among items based on two categories.
Double Bar Graph Representation
A double bar graph includes two parameters, x and y. The two bars represent the two similar types of any quantity. Below graph represents the double graph.
How to Construct a Double Bar Graph?
The steps to make double bar graph are as follows.
**Step 1: Determine the two sets of data you want to compare.
**Step 2: Decide on the scale for your graph.
**Step 3: Draw two perpendicular axes and label the axes with appropriate titles indicating what each axis represents.
**Step 4: Draw bars for each data set and color-code or label the bars to distinguish between the two data sets.
Double Bar Graphs Vs Single Bar Graphs
The below table represents the difference between the double bar graphs and single bar graphs.
| Aspect | Double Bar Graphs | Single Bar Graphs |
|---|---|---|
| Purpose | Compare two sets of data side by side for easy comparison. | Represent one set of data, typically for categorical data. |
| Data Representation | Two sets of bars are used, each representing a different dataset. | One set of bars represents the entire dataset. |
| Comparison | Allows direct comparison between two related datasets. | Suitable for displaying data without direct comparison. |
| Application | Commonly used when comparing data before and after an intervention, or when comparing data across different groups. | Often used for displaying frequency distributions, percentages, or categorical data. |
| Examples | Comparing sales figures for two different products over a period. | Showing the distribution of favorite colors in a survey. |
Difference between Double Bar Graphs and Line Graphs
The below table represents the difference between the double bar graphs and line graphs.
| **Aspect | Double Bar Graphs | Line Graphs |
|---|---|---|
| **Representation | Uses bars to represent data points, comparing two datasets side by side. | Connects data points with lines, showing trends over time or continuous data. |
| **Data Types | Typically used for discrete or categorical data. | Suitable for continuous data, such as time series data. |
| **Comparison | Directly compares two datasets at specific points or categories. | Shows trends or patterns in data over time or across a continuous variable. |
| **Interpretation | Suitable for comparing discrete values or categories at specific points. | Useful for identifying trends, patterns, and relationships in data. |
| **Example Use Cases | Comparing sales figures for two different products in specific months. | Showing the temperature variations throughout the year. |
Advantages of Double Bar Graphs
Some advantages of double bar graphs are listed below.
- Double bar graphs are easy to construct.
- It makes the complex comparison of two quantities easy to understand.
- It can compare multiple data sets.
Double Bar Graph Uses
Some of the uses of double bar graph are given below.
- Double bar graphs are used to compare different sets of groups of data.
- Double bar graphs are highly used in businesses, finance for representing data.
- Double bar graphs are used when we require some estimation of the different quantities.
**Read More
Double Bar Graph Solved Examples
**Example: Draw the double graph for the below given table.
| Student | Marks in Math | Marks in English |
|---|---|---|
| A | 40 | 30 |
| B | 20 | 10 |
| C | 30 | 20 |
**Solution:
Let the two parameters be student and marks. Consider student in x- axis and marks in y-axis. The two subject math and English represent the types.
Practice Problems on Double Bar Graph
**Problem 1: Draw the double bar graph of below given table.
| Person | Saving | Expenditure |
|---|---|---|
| X | 10000 | 3000 |
| Y | 5000 | 1000 |
| Z | 20000 | 5000 |
| P | 15000 | 2000 |
**Problem 2: Draw the double bar graph of below given table.