# [EM] Re: Weighted Median Approval

Dave Ketchum davek at clarityconnect.com
Sun Apr 18 13:15:02 PDT 2004

```On Mon, 19 Apr 2004 13:21:55 +0930 Chris Benham wrote:

??? MUST BE HIGH SPEED MAIL - THAT TRANSLATES INTO ABOUT MIDNIGHT WHERE I
LIVE, AND THE SUN HAS NOT SET HERE YET!!!

> Participants,
> As Forest has pointed out, in my last post (Fri.Apr.16) I somehow made a
> simple calculation blunder.
> Before giving my new demonstration, here is the relevant part of  that
> post, corrected.
>

...

> Using Forest's formula to break the tie, we subtract the number of
> ballots on which A is ranked below second from
> the number on which A is ranked above second, and then divide this sum
> by the number of ballots on which A is ranked
> exactly second. For A this comes to (2-3)/4 =  -.25.  For B this is
> (3-4)/2 = -.5  and for C it is  (4-2)/3 = .333333.
>
> I wrongly had  A winning, because I  erred in having  "(4-2)/3 = -.6666"
> , i.e  minus 2/3 instead of the correct plus 1/3.
>

SLOWLY:
Starting with:  (4-2)/3
Is (2)/3
Is +.66667
--
davek at clarityconnect.com    people.clarityconnect.com/webpages3/davek
Dave Ketchum   108 Halstead Ave, Owego, NY  13827-1708   607-687-5026
Do to no one what you would not want done to you.
If you want peace, work for justice.

```