In this post, we show you how to add error bars to a Microsoft Excel spreadsheet. You can use Error bars for standard deviation & trending margin of error.

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.

Your instructor (me) told you to be sure and include error bars on your graph. What are error bars? How do you add error bars - whatever they are?