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.

Whenever error bars are added in Excel, users can look at a standard error of deviation for each marker located on the chart.

Do you plot error bars when visualizing data? A new study suggests that the type of variability you choose to display can drastically change how people perceive a ...

Suppose you have some data. You want to plot that data and turn it in with your lab report. Your instructor (me) told you to be sure and include error bars on your graph.

Bar charts are too frequently used to communicate data that they cannot represent well. We strongly encourage the use of more appropriate plots to display statistical samples.

Bar charts are appropriate for counts, whereas box plots should be used to represent the characteristics of a distribution.

Here, showing wider bars (i.e., standard deviations) might bias inferences toward equivalence because they make the point-estimates for the means appear closer together.