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 ...

Choosing the right type of chart helps you display discrete data more effectively. Discrete data consists of whole numbers that are counted rather than measured. For example, when you track items sold ...

A reader need go no further than page two of Leland Wilkinson’s The Grammar of Graphics before reading, “We will also come to realize why a histogram is not a bar chart and why many other graphics ...

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 a simple ...