On Wed, Mar 14, 2012 at 3:41 AM, cheba meier wrote:
> Hello,
>
> I have to compute the pooled z-value and I would like to know which way is
> more appropriate
>
>
> b <- c( -0.205,1.040,0.087)
> s <- c(0.449,0.167,0.241)
> n <- c(310, 342, 348)
> z <- b/s
>
> Z <- sum(z)/sqrt(length(n))
> P <- 2*(
Hello,
I have to compute the pooled z-value and I would like to know which way is
more appropriate
b <- c( -0.205,1.040,0.087)
s <- c(0.449,0.167,0.241)
n <- c(310, 342, 348)
z <- b/s
Z <- sum(z)/sqrt(length(n))
P <- 2*(1-pnorm(abs(Z)))
P
w <- sqrt(n)
Zw <- sum(w * z)/sqrt(sum(w^2))
Pw <- 1 -
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