A data table alone has no axes, horizontal or otherwise. It consists of points of data; each point describes at least two pieces of information. Other points convey different numerical data about the ...

Dual-axis graphs, which have two y-axes, are useful because they allow you to see different data at a glance. However, this graph has many problems, and Datawrapper, a data visualization tool, ...

Descriptive labels on an Excel chart enhance its readability and help you interpret the information the chart contains. Whether naming comes in the form of text, numbers or a combination, both the x ...

This post is motivated by a comment on my blog post Line Charts Are Not Always the Best Way to Show Time Series. The comment by Meic Goodyear said, “A small point, but you could improve your Figure 2 ...