Question Video: The Interquartile Range Mathematics

Video Transcript

A set of data’s minimum is 3.0, its lower quartile is 4.5, its median is 6.4, its upper quartile is 7.9, and its maximum is 10.1. Determine its interquartile range.

We know that the interquartile range of any data set is equal to the upper quarter minus the lower quartile. We are told that the lower quartile is equal to 4.5. The upper quartile is equal to 7.9. This means that the IQR or interquartile range is equal to 7.9 minus 4.5. This is equal to 3.4. The interquartile range of the data is 3.4.