Excel Graph with 2 Y Axes Made Easy

Introduction to Excel Graphs with 2 Y Axes

When dealing with data that has different units or scales, creating a graph with two Y axes in Excel can be very useful. This feature allows you to plot two sets of data with different units on the same graph, making it easier to visualize and compare the data. In this article, we will walk you through the steps to create a graph with two Y axes in Excel, and provide tips and tricks to make the process easier.

Preparing Your Data

Before creating a graph with two Y axes, you need to prepare your data. You will need two sets of data, each with its own set of values. For example, let’s say you want to plot the sales of two different products over time. You would have one set of data for the sales of product A, and another set of data for the sales of product B. Make sure your data is organized in a table with headers, and that each set of data is in a separate column.

Creating the Graph

To create a graph with two Y axes in Excel, follow these steps:

• Select the data you want to plot, including the headers.
• Go to the “Insert” tab in the ribbon, and click on the “Scatter” button in the “Charts” group.
• Choose the type of scatter chart you want to create, such as a scatter chart with only markers.
• Right-click on the chart, and select “Select Data” from the context menu.
• In the “Select Data Source” dialog box, click on the “Add” button to add a new data series.
• Select the second set of data you want to plot, and click “OK” to add it to the chart.
• Right-click on the chart again, and select “Change Series Chart Type” from the context menu.
• In the “Change Series Chart Type” dialog box, select the second data series, and choose a different chart type, such as a line chart.
• Click “OK” to apply the changes.

Adding a Second Y Axis

To add a second Y axis to your graph, follow these steps:

• Right-click on the chart, and select “Format Data Series” from the context menu.
• In the “Format Data Series” dialog box, click on the “Series Options” button.
• In the “Series Options” dialog box, check the box next to “Secondary Axis” to add a second Y axis to the chart.
• Click “OK” to apply the changes.

Customizing the Graph

Once you have created the graph with two Y axes, you can customize it to suit your needs. You can change the titles, labels, and colors of the graph, as well as add gridlines and other elements. To do this, follow these steps:

• Right-click on the chart, and select “Format Data Series” from the context menu.
• In the “Format Data Series” dialog box, you can change the title, labels, and colors of the graph.
• Click “OK” to apply the changes.

💡 Note: When creating a graph with two Y axes, it's essential to ensure that the scales of the two axes are compatible. If the scales are not compatible, the graph may be difficult to read and interpret.

Example Use Case

Let’s say you want to create a graph to show the relationship between the temperature and the sales of ice cream. The temperature data is measured in degrees Celsius, while the sales data is measured in dollars. To create a graph with two Y axes, you would follow the steps outlined above. The resulting graph would show the temperature on one Y axis and the sales on the other Y axis, making it easy to visualize the relationship between the two variables.

Temperature (°C)	Sales ($)
20	100
25	150
30	200

Conclusion and Final Thoughts

Creating a graph with two Y axes in Excel can be a powerful way to visualize and compare data with different units or scales. By following the steps outlined in this article, you can create a graph that is easy to read and interpret, and that effectively communicates the relationship between the two variables. Remember to ensure that the scales of the two axes are compatible, and to customize the graph to suit your needs. With practice and experience, you can become proficient in creating graphs with two Y axes, and unlock the full potential of Excel to visualize and analyze your data.