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 ...

Bar charts and box plots are omnipresent in the scientific literature. They are typically used to visualize quantities associated with a set of items. Representing the data accurately, however ...

A box-and-whisker plot is displayed for the measurements in each subgroup on the box chart. Figure 32.12 illustrates the elements of each plot. Figure 32.12: Box-and-Whisker Plot ...