Displaying 3 results from an estimated 3 matches for "se_z".
Did you mean:
sc_z
2009 Aug 27
1
standard error associated with correlation coefficient
I want the standard error associated with a correlation. I can calculate
using cor & var, but am wondering if there are libraries that already
provide this function.
[[alternative HTML version deleted]]
2009 Feb 13
2
Meta-Analyisis on Correlations
Dear R-Community,
I'm currently trying to find a way to conduct a meta-analysis in R.
I would like to analyze data from mostly-cross-sectional survey-studies. The
effect sizes would be correlations.
The R packages "meta" and "rmeta" are, as far as I can see, set up for
analysis with effect sizes for differences (i.e. comparison of the
means/odds-ratios of experimental
2009 Sep 01
1
Logistic Politomic Regression in R
...lp@r-project.org>
Message-ID:
<f2faed070908301053g4bab9b95n681b31d0ace49300@mail.gmail..com>
Content-Type: text/plain
Here are some options for confidence intervals.
#by hand
sample_r <- .5
n_sample <- 100
df <- n_sample-1
fisher_z <- 0.5*(log(1+sample_r)-log(1-sample_r))
se_z <- 1/sqrt(n_sample-3)
t_crit <- qt(.975,df ,lower.tail=TRUE)
z_lci <- fisher_z - (t_crit * se_z)
z_uci <- fisher_z + (t_crit * se_z)
(r_lci <- tanh(z_lci))
(r_uci <- tanh(z_uci))
# Compare to the CIr function in psychometric library
#that uses standard normal instead of t
librar...