The interquartile range (IQR) is an important concept ... 5 x IQR are defined as outliers and are shown as a dot. See the figure below: Box Plot John collected some data on invoice processing ...

The box plot shows the marks in a science test for a group of students. What is the range of the data? What is the lower quartile? Calculate the interquartile range of the data. The top 25% of the ...