From: Nick Dokos <nicholas.dokos@hp.com>
To: Rodolfo Aramayo <raramayo@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: Statistics in Org-Tables
Date: Wed, 20 Feb 2013 13:27:16 -0500 [thread overview]
Message-ID: <2964.1361384836@alphaville> (raw)
In-Reply-To: Message from Rodolfo Aramayo <raramayo@gmail.com> of "Wed, 20 Feb 2013 10:47:45 CST." <CAKHaNCoomg9q8weRGXgRtKqP4y+AhCPcV00izdv__OP5GiCufg@mail.gmail.com>
Rodolfo Aramayo <raramayo@gmail.com> wrote:
> Simple question: What is the best way to configure/find out how to
> calculate Median, Standard Deviation in an org-table?
There are calc functions to compute these things, but the layout of your
table will of course influence the formulas. Here's a simple example
that calculates the statistics for the second column - it uses the
@I..@II range reference notation to get the numbers between the first
and second separators and the @> (@>>, @>>>, etc.) notation to refer to
the last (last minus one, last minus two, etc.) row:
--8<---------------cut here---------------start------------->8---
* mean, median, stdev
| i | x |
|--------+-----------|
| 1 | 3 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 3 |
| 7 | 4 |
| 8 | 1 |
| 9 | 1 |
|--------+-----------|
| mean | 1.8888889 |
| median | 1 |
| sdev | 1.1666667 |
| sum | 17 |
#+TBLFM: @>$2=vsum(@I..@II) :: @>>>>$2=vmean(@I..@II) :: @>>>$2=vmedian(@I..@II) :: @>>$2=vsdev(@I..@II)
--8<---------------cut here---------------end--------------->8---
More details about such references are in the Org manual:
(info "(org) References")
More details about the calc functions are in the Calc manual:
(info "(calc) Single-variable statistics")
Nick
prev parent reply other threads:[~2013-02-20 18:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-20 16:47 Statistics in Org-Tables Rodolfo Aramayo
2013-02-20 18:04 ` JBash
2013-02-20 18:13 ` Rodolfo Aramayo
2013-02-20 18:27 ` Nick Dokos [this message]
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