A psychology study found that bar graphs representing averages were prone to misinterpretation. Plus, how to improve your data literacy.

Thanks to their visual simplicity, bar graphs are popular tools for representing data. But do we really understand how to read them? New research has found that bar graphs are frequently ...

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.

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.

On the surface, interpreting a graph is straightforward. Does the line go up or down? Is one bar taller than the other? For these simple comparisons, people are intuitive experts in categorizing ...