The interquartile range is another measure of spread ... so the UQ is the 30th number. To find these from the graph we draw two lines across from the vertical axis, one at 10 and one at 30.

A box plot is a diagram which provides a quick ... A cumulative frequency diagram is also a good way to find the interquartile range, which is the difference between the upper quartile and lower ...

Visualization methods enhance our understanding of sample data and help us make comparisons across samples. Box plots are a simple but powerful graphing tool that can be used in place of ...

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 ...