🚀 go-pugleaf

In article <1992Nov17.170005@masg1.epfl.ch> zoubeidi@masg1.epfl.ch (Toufik Zoubeidi) writes:
>Hello, 
>
>In preparing a class example we found out that in computing quartiles
>S-plus uses different methods under different commands. The method
>used in the commands "summary" or "quantile" is different from the 
>one used to compute quartiles for a boxplot in the command "boxplot".
>We know which method is used in each case. Does anyone know the reason
>for this difference.
>
 There was an informative article a couple of years ago in _The Americna
_Statistician_ which might shed some light on this.  I think it was called
_Some implementations of the boxplot_ and two of its authors were Iglewicz 
and Hoaglin.  I think the year was 1989 but I am not absolutely sure.

As I remember it, the authors point out that there are eight different
definitions of the sample quartile which are used in different circumstances.

It is worth looking at.