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From: Nicolas Goaziou <n.goaziou@neuf.fr>
To: emacs-orgmode@gnu.org
Subject: Spreadsheet and weighted means
Date: Sat, 20 Sep 2008 09:00:37 +0200	[thread overview]
Message-ID: <87wsh7w589.fsf@selenimh.orion.org> (raw)

Hello,

I stumbled upon this problem : I'd like to compute the weighted mean of
some values, even though cells might be empty. In fact, I'm aiming at
something like this :

|           | Coeff. |    0.2 |    0.5 |      1 |
|-----------+--------+--------+--------+--------|
| Name      |   Mean | Test 1 | Test 2 | Test 3 |
|-----------+--------+--------+--------+--------|
| Student A |     10 |     15 |     12 |      8 |
| Student B |     12 |        |     16 |     10 |

where 10=(15*0.2+12*0.5+8*1)/(0.2+0.5+1) and 12=(16*0.5+10*1)/(0.5+1)

I just can't guess what has to be put in @3$2 as a column formula to
calculate those mean means… I perhaps have overlooked something simple.
Anyway, if anyone has a clue here, I will be pleased to hear it.

-- 
Nicolas Goaziou

next             reply	other threads:[~2008-09-20  9:16 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-20  7:00 Nicolas Goaziou [this message]
2008-09-29  8:43 ` Spreadsheet and weighted means Carsten Dominik
2008-09-29  8:44   ` Carsten Dominik
2008-10-01 16:46   ` Nicolas Goaziou
2008-10-01 19:26     ` Carsten Dominik
2008-10-01 19:45       ` Embedded elisp formulas, was: " Eric Schulte
2008-10-01 20:29         ` Paul R
2008-10-02  0:03           ` Eric Schulte
2008-10-02 11:44             ` Carsten Dominik
2008-10-08 23:12               ` ANN: org-eval-light.el was: " Eric Schulte
2008-11-06  1:19               ` Eric Schulte
2008-11-09  7:02                 ` Carsten Dominik
2008-11-10 19:51                   ` Daniel Clemente
2008-10-04  8:49       ` Nicolas Goaziou

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