ci.popsize

Computes a Wald confidence interval for an unknown population size using
mark-recapture sampling. This method assumes independence of the two
samples. This function requires the frequency counts from an incomplete
2 x 2 contingency table for the two samples (f11 is the unknown number
of people who were not observed in either sample). This method sets the
estimated odds ratio (with .5 added to each cell) to 1 and solves for
unobserved cell frequency. An approximate standard error is recovered
from the confidence interval.

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.popsize function

<dl><dt>alpha</dt>
<dd>alpha level for 1-alpha confidence</dd>
<dt>f00</dt>
<dd>number of people observed in both samples</dd>
<dt>f01</dt>
<dd>number of people observed in first sample but not second sample</dd>
<dt>f10</dt>
<dd>number of people observed in second sample but not first sample</dd></dl>

Arguments

Confidence interval for an unknown population size — ci.popsize

<dl>

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


<dt>f00</dt>
<dd>number of people observed in both samples</dd>


<dt>f01</dt>
<dd>number of people observed in first sample but not second sample</dd>


<dt>f10</dt>
<dd>number of people observed in second sample but not first sample</dd>

</dl>

ci.popsize: Confidence interval for an unknown population size

Description

Usage

Value

Arguments

Examples