ci.prop.inv

Computes an exact confidence interval for a population proportion
when inverse sampling has been used. An approximate standard error is
recovered from the confidence interval. With inverse sampling, the number
of participants who have the attribute (f) is predetermined and sampling
continues until f attains its prespecified value. With inverse sampling,
the sample size (n) will not be known in advance.
For more details, see Section 1.19 of Bonett (2021, Volume 3)

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.prop.inv function

<dl><dt>alpha</dt>
<dd>alpha level for 1-alpha confidence</dd>
<dt>f</dt>
<dd>number of participants who have the attribute (fixed)</dd>
<dt>n</dt>
<dd>sample size (random)</dd></dl>

Arguments

Confidence interval for a proportion using inverse sampling — ci.prop.inv

<dl>

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


<dt>f</dt>
<dd>number of participants who have the attribute (fixed)</dd>


<dt>n</dt>
<dd>sample size (random)</dd>

</dl>

ci.prop.inv: Confidence interval for a proportion using inverse sampling

Description

Usage

Value

Arguments

References

Examples