That chart form is a box plot, also called a box and whisker plot. The bar charts compared the times visitors spent at the various exhibitions by comparing their medians. Summary statistics such ...

This post recommends using Trellis plots instead of 3D bar charts for three-dimensional (three variable) data. In Winner of the Bad Graph Contest Announced, I promised to present alternatives to ...

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 ...