ci.agree

Computes an adjusted Wald confidence interval for a G-index of agreement
between two polychotomous ratings. This function requires the number of
objects that were given the same rating by both raters. The G-index
corrects for chance agreement. The G-index is a better measure of
agreement than Cohen's kappa, and the confidence interval for the G-index
used here has better small-sample properties than the confidence interval
for Cohen's kappa.

Implements confidence interval and sample size methods that
are especially useful in psychological research. The methods can be
applied in 1-group, 2-group, paired-samples, and multiple-group designs
and to a variety of parameters including means, medians, proportions,
slopes, standardized mean differences, standardized linear contrasts
of means, plus several measures of correlation and association.
Confidence interval and sample size functions are given for single
parameters as well as differences, ratios, and linear contrasts of
parameters. The sample size functions can be used to approximate the
sample size needed to estimate a parameter or function of parameters
with desired confidence interval precision or to perform a variety of
hypothesis tests (directional two-sided, equivalence, superiority,
noninferiority) with desired power. For details see: Statistical Methods
for Psychologists, Volumes 1 – 4, <https://dgbonett.sites.ucsc.edu/>.

Douglas G. Bonett

statpsych

Statistical Methods for Psychologists

Robert J. Calin-Jageman

ci.agree function

<dl><dt>alpha</dt>
<dd>alpha level for 1-alpha confidence</dd>
<dt>n</dt>
<dd>sample size</dd>
<dt>f</dt>
<dd>number of objects rated in agreement</dd>
<dt>k</dt>
<dd>number of rating categories</dd></dl>

Arguments

Confidence interval for a G-index of agreement — ci.agree

<dl>

<dt>alpha</dt>
<dd>alpha level for 1-alpha confidence</dd>


<dt>n</dt>
<dd>sample size</dd>


<dt>f</dt>
<dd>number of objects rated in agreement</dd>


<dt>k</dt>
<dd>number of rating categories</dd>

</dl>

ci.agree: Confidence interval for a G-index of agreement

Description

Usage

Value

Arguments

References

Examples