spreadsheet, calc descriptive statistics, the mode??

[Uwe Brauer]

Hi 

As far as I can see 
#+begin_src 

|   | Marks |                       |
|---+-------+-----------------------|
|   |     1 |                       |
|   |     1 |                       |
|   |     4 |                       |
|   |     5 |                       |
|   |     6 |                       |
|---+-------+-----------------------|
| 4 |   3.4 | vmod([1, 1, 4, 5, 6]) |
,#+TBLFM: 
@7$1=vmedian(@I$2..@II$2)::@7$2=vmean(@I$2..@II$2)::@7$3=vmod(@I$2..@II$2)
#+end_src


The mode as in explained for example in 
https://en.wikipedia.org/wiki/Mode_(statistics)

Is not included in calc. Am I correct. I tried to search in the info but
cannot find anything

Regards

Uwe Brauer