cohens_d_

Calculate Cohens'd from different statistics (see Details).

Formatter functions in the 'apa' package take the return value of a
statistical test function, e.g. a call to chisq.test() and return a string
formatted according to the guidelines of the APA (American Psychological
Association).

Daniel Gromer

Format Outputs of Statistical Tests According to APA Guidelines

cohens_d_ function

<dl><dt>m1</dt>
<dd>Numeric, mean of the first group</dd>
<dt>m2</dt>
<dd>Numeric, mean of the second group</dd>
<dt>sd1</dt>
<dd>Numeric, standard deviation of the first group</dd>
<dt>sd2</dt>
<dd>Numeric, standard deviation of the second group</dd>
<dt>n1</dt>
<dd>Numeric, size of the first group</dd>
<dt>n2</dt>
<dd>Numeric, size of the second group</dd>
<dt>t</dt>
<dd>Numeric, t-test statistic</dd>
<dt>n</dt>
<dd>Numeric, total sample size</dd>
<dt>paired</dt>
<dd>Logical indicating whether to calculate Cohen's for independent
samples or one sample (<code>FALSE</code>, default) or for dependent
samples (<code>TRUE</code>).</dd>
<dt>corr</dt>
<dd>Character specifying the correction applied to calculation of the
effect size: <code>"none"</code> (default) returns Cohen's d,
<code>"hedges_g"</code> applies Hedges correction and <code>"glass_delta"</code>
calculates Glass' \(\Delta\) (uses the standard deviation of the second
group).</dd></dl>

Arguments

Cohen's d — cohens_d_

<dl>

<dt>m1</dt>
<dd>Numeric, mean of the first group</dd>


<dt>m2</dt>
<dd>Numeric, mean of the second group</dd>


<dt>sd1</dt>
<dd>Numeric, standard deviation of the first group</dd>


<dt>sd2</dt>
<dd>Numeric, standard deviation of the second group</dd>


<dt>n1</dt>
<dd>Numeric, size of the first group</dd>


<dt>n2</dt>
<dd>Numeric, size of the second group</dd>


<dt>t</dt>
<dd>Numeric, t-test statistic</dd>


<dt>n</dt>
<dd>Numeric, total sample size</dd>


<dt>paired</dt>
<dd>Logical indicating whether to calculate Cohen's for independent
samples or one sample (<code>FALSE</code>, default) or for dependent
samples (<code>TRUE</code>).</dd>


<dt>corr</dt>
<dd>Character specifying the correction applied to calculation of the
effect size: <code>"none"</code> (default) returns Cohen's d,
<code>"hedges_g"</code> applies Hedges correction and <code>"glass_delta"</code>
calculates Glass' \(\Delta\) (uses the standard deviation of the second
group).</dd>

</dl>

cohens_d_: Cohen's d

Description

Usage

Arguments

Details

References