I' m trying to compute weighted mean on different
groups but it only returns NA. If I use the following
data.frame truc:
x y w
1 1 1
1 2 2
1 3 1
1 4 2
0 2 1
0 3 2
0 4 1
0 5 1
where x is a factor, and then use the command :
tapply(truc$y,list(truc$x),wtd.mean, weights=truc$w)
: Thursday, January 12, 2006 3:44 PM
Subject: [R] tapply and weighted means
I' m trying to compute weighted mean on different
groups but it only returns NA. If I use the following
data.frame truc:
x y w
1 1 1
1 2 2
1 3 1
1 4 2
0 2 1
0 3 2
0 4 1
0 5 1
where x
/~m0390867/dimitris.htm
- Original Message -
From: Florent Bresson [EMAIL PROTECTED]
To: R-help r-help@stat.math.ethz.ch
Sent: Thursday, January 12, 2006 3:44 PM
Subject: [R] tapply and weighted means
I' m trying to compute weighted mean on different
groups but it only returns
On Thu, 2006-01-12 at 15:44 +0100, Florent Bresson wrote:
I' m trying to compute weighted mean on different
groups but it only returns NA. If I use the following
data.frame truc:
x y w
1 1 1
1 2 2
1 3 1
1 4 2
0 2 1
0 3 2
0 4 1
0 5 1
where x is a factor, and then
