Distance between the limits of a quartile in a statistical distribution.

### Notation

We can note:

- EQ
_{1}= |Q_{1}–*x*|_{min} - EQ
_{2}= |Q_{2}– Q_{1}| - EQ
_{3}= |Q_{3}– Q_{2}| - EQ
_{4}= |*x*– Q_{max}_{3}|

where EQ_{1}, for example, refers to the range of the first quartile, \(x_{min}\) refers to the lowest datum in the distribution and \(x_{max}\) refers to the highest datum in the distribution.