Microsoft Excel can present two series of data points together on the horizontal axis, but if the number scale for each series dramatically differs, the data will not be readable. Using a two-sided ...

I blew it! In my post earlier this morning about charts with dual y-axes I picked some miscellaneous data as an illustration. Then I saw a tweet about an article written in October that lays out the ...

Common Excel visuals like pies, 3D charts, and dual axes often mislead more than they clarify data.

Properly formatted charts and graphs can help you grasp the patterns and trends hidden within the raw data of an Excel spreadsheet. For example, if you are comparing the stock performance of two ...

Guidance from data visualization specialists warns that some Excel chart types can confuse or mislead audiences. Examples include pie charts with many segments, 3D charts that distort perspective, and ...