The interquartile range is another measure of spread, except that it has the added advantage of not being affected by large outlying values. In order to calculate this value we must first ...

The interquartile range (IQR) is an important concept ... determining whether your data has any outliers. The box plot then draws two whiskers or lines representing the maximum and minimum values ...

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 ...