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, ...

There is only one place for most 3D graphs, and that is the trash bin! The large majority of 3D graphs used in general or business context are confusing to interpret and prone to be misread. Popular ...

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. If you want to sow division among chartmakers, ask them if pie charts are a good idea. If you want to raise a ...