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Chapter 14. Showcasing Data with Charts,... > Adding Error Bars and Trendlines

Adding Error Bars and Trendlines

Two additional visual cues, error bars and trendlines, can help your readers understand your data more quickly. Error bars show the error margin built into each data marker, and trendlines use an analysis of existing data to predict future behavior.

Inserting Error Bars

You can create error bars for the data series in your 2-D area, bar, column, and line charts, as well as bubble and XY (scatter) charts. To add error bars to your chart, follow these steps:


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