ci.cor2.gen

Computes a 100(1 - alpha)% confidence interval for a difference in
population correlations in a 2-group design. The correlations can be
Pearson, Spearman, partial, semipartial, or point-biserial correlations.
The correlations could also be correlations between two latent factors.
The function requires a point estimate and a 100(1 - alpha)% confidence
interval for each correlation as input. The confidence intervals for each
correlation can be obtained using ci.fisher.
For more details, see Section 2.17 of Bonett (2021, Volume 2)

Implements confidence interval and sample size methods that are especially
useful in psychological research but are also useful in educational, social science,
business, and biological research. This package includes more than 100 confidence
interval functions and more than 80 sample size functions for 1-group, 2-group,
paired-samples, and multiple-group designs and for a variety of parameters including
means, medians, proportions, slopes, standardized mean differences, standardized
linear contrasts of means, and several measures of correlation and association. 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 about these methods 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.cor2.gen function

<dl><dt>cor1</dt>
<dd>estimated correlation for group 1</dd>
<dt>ll1</dt>
<dd>lower limit for group 1 correlation</dd>
<dt>ul1</dt>
<dd>upper limit for group 1 correlation</dd>
<dt>cor2</dt>
<dd>estimated correlation for group 2</dd>
<dt>ll2</dt>
<dd>lower limit for group 2 correlation</dd>
<dt>ul2</dt>
<dd>upper limit for group 2 correlation</dd></dl>

Arguments

Confidence interval for a 2-group correlation difference — ci.cor2.gen

<dl>

<dt>cor1</dt>
<dd>estimated correlation for group 1</dd>


<dt>ll1</dt>
<dd>lower limit for group 1 correlation</dd>


<dt>ul1</dt>
<dd>upper limit for group 1 correlation</dd>


<dt>cor2</dt>
<dd>estimated correlation for group 2</dd>


<dt>ll2</dt>
<dd>lower limit for group 2 correlation</dd>


<dt>ul2</dt>
<dd>upper limit for group 2 correlation</dd>

</dl>

ci.cor2.gen: Confidence interval for a 2-group correlation difference

Description

Usage

Value

Arguments

References

Examples