19+ Define Interquartile Range In Math Background. Where is iqr used in math? In descriptive statistics, the interquartile range (iqr), also called the midspread, middle 50%, or h‑spread, is a measure of statistical dispersion.
The interquartile range is a much better measure of variation than the regular range (maximum value minus minimum value).
This statistics glossary includes definitions of all technical terms it is defined as the difference between the largest and smallest values in the middle 50% of a set of data. There are 5 values below the median (lower half), the middle value is 64 which is the first quartile. Showing the dispersion range rather than just one number can make the iqr more effective. The interquartile range (iqr) identifies and eliminates the deviations from both ends of a data series.
