Bar graphs seem like one of the simplest ways to represent data. Many people assume that the longer the bar, the bigger the number it represents. Sometimes bar graphs represent an average not a total ...

Thanks to their visual simplicity, bar graphs are popular tools for representing data. But do we really understand how to read them? New research from Wellesley College published in the Journal of ...

You can make a bar graph in Excel by first selecting the range of data you want to depict, and then using the dropdown menu to select the desired chart. A bar graph represents the data of an Excel ...

Software packages for charting data often offer menus; i.e., lists of charts that are available. Excel offers a menu; Tableau has Show Me! Elementary statistics and graphing books offer recipes; i.e., ...

Data visualization is one of the most important tools we have to analyze data. But it’s just as easy to mislead as it is to educate using charts and graphs. In this article we’ll take a look at 3 of ...

Graphs are pictorial representations of numbers. Therefore, at the least, we should expect that the representation of the numbers be proportional to the numbers themselves. Unfortunately, this is not ...