Save guides, add subjects and pick up where you left off with your BBC account. The interquartile range is another measure of spread, except that it has the added advantage of not being affected ...

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 ...

75% of the players are over 70 kg. True or false. Estimate the interquartile range. The median is indicated by the line inside the box. It is approximately 76 kg. The lightest player is 50 kg.

This example uses the flight delay data of the preceding example to illustrate how you can create box charts with various styles of box-and-whisker plots. For simplicity, the control limits are ...