ci.tukey

Computes heteroscedastic Tukey-Kramer (also known as Games-Howell)
confidence intervals for all pairwise comparisons of population means
using estimated means, estimated standard deviations, and samples sizes as
input. A Satterthwaite adjustment to the degrees of freedom is used to
improve the accuracy of the confidence intervals.
For more details, see Section 3.1 of Bonett (2021, Volume 1)

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.tukey function

<dl><dt>alpha</dt>
<dd>alpha level for simultaneous 1-alpha confidence</dd>
<dt>m</dt>
<dd>vector of estimated group means</dd>
<dt>sd</dt>
<dd>vector of estimated group standard deviations</dd>
<dt>n</dt>
<dd>vector of sample sizes</dd></dl>

Arguments

Tukey-Kramer confidence intervals for all pairwise mean differences in a
between-subjects design — ci.tukey

<dl>

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


<dt>m</dt>
<dd>vector of estimated group means</dd>


<dt>sd</dt>
<dd>vector of estimated group standard deviations</dd>


<dt>n</dt>
<dd>vector of sample sizes</dd>

</dl>

ci.tukey: Tukey-Kramer confidence intervals for all pairwise mean differences in a between-subjects design

Description

Usage

Value

Arguments

References

Examples