size.test.sign.ps

Computes sample size required for a paired-samples sign test with desired
power. The null hypothesis can be expressed in terms of a population
proportion. In a paired-samples experiment, the proportion is defined as
the proportion of members in the population with scores that would be
larger under treatment 1 than treatment 2. In a paired-samples
nonexperiment, the proportion is the proportion of members in the
population with measurement 1 scores that are larger than their
measurement 2 scores. Under the null hypothesis, the proportion is equal
to .5. This function requires a planning value of this population
proportion.

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

size.test.sign.ps function

<dl><dt>alpha</dt>
<dd>alpha level for hypothesis test</dd>
<dt>pow</dt>
<dd>desired power</dd>
<dt>p</dt>
<dd>planning value of proportion</dd></dl>

Arguments

Sample size for a paired-samples sign test — size.test.sign.ps

<dl>

<dt>alpha</dt>
<dd>alpha level for hypothesis test</dd>


<dt>pow</dt>
<dd>desired power</dd>


<dt>p</dt>
<dd>planning value of proportion</dd>

</dl>

size.test.sign.ps: Sample size for a paired-samples sign test

Description

Usage

Value

Arguments

Examples