How to add Error bars in Excel As we have stated above, you will need to begin with an existing graph, so ensure one is created and opened before going forward.

QUICK ANSWER To add error bars in Excel, click on your chart or graph in Excel. Click Chart Elements > Error Bars.

If you create charts with Excel, error bars allow you to visualize margins of error for data points. Here's how to add error bars in Excel.

While they might look like an advanced feature, it's very easy to add data bars to a spreadsheet in Excel with just a few clicks.

The next step is to tell Logger Pro that you want to use the "error" column as the uncertainty for the y-column. Double click on the y-column in the data set (at the top).