scale_group_means

predict_scale_group_means

Scales a vector of means and standard deviations containing group values.

Supplementary functions for item response models aiming
to complement existing R packages. The functionality includes among others
multidimensional compensatory and noncompensatory IRT models
(Reckase, 2009, <doi:10.1007/978-0-387-89976-3>),
MCMC for hierarchical IRT models and testlet models
(Fox, 2010, <doi:10.1007/978-1-4419-0742-4>),
NOHARM (McDonald, 1982, <doi:10.1177/014662168200600402>),
Rasch copula model (Braeken, 2011, <doi:10.1007/s11336-010-9190-4>;
Schroeders, Robitzsch & Schipolowski, 2014, <doi:10.1111/jedm.12054>),
faceted and hierarchical rater models (DeCarlo, Kim & Johnson, 2011,
<doi:10.1111/j.1745-3984.2011.00143.x>),
ordinal IRT model (ISOP; Scheiblechner, 1995, <doi:10.1007/BF02301417>),
DETECT statistic (Stout, Habing, Douglas & Kim, 1996,
<doi:10.1177/014662169602000403>), local structural equation modeling
(LSEM; Hildebrandt, Luedtke, Robitzsch, Sommer & Wilhelm, 2016,
<doi:10.1080/00273171.2016.1142856>).

Alexander Robitzsch

sirt

Supplementary Item Response Theory Models

scale_group_means function

<dl><dt>M</dt>
<dd>Vector of means</dd><dt>SD</dt>
<dd>Vector of standard deviations</dd><dt>probs</dt>
<dd>Optional vector containing probabilities</dd> <dt>M_target</dt>
<dd>Target value for mean</dd> <dt>SD_target</dt>
<dd>Target value for standard deviation</dd> <dt>object</dt>
<dd>Fitted object from <code>scale_group_means</code></dd></dl>

Arguments

Scaling of Group Means and Standard Deviations — scale_group_means

<dl>

<dt>M</dt>
<dd>Vector of means</dd>

<dt>SD</dt>
<dd>Vector of standard deviations</dd>

<dt>probs</dt>
<dd>Optional vector containing probabilities</dd>

 <dt>M_target</dt>
<dd>Target value for mean</dd>

 <dt>SD_target</dt>
<dd>Target value for standard deviation</dd>

 <dt>object</dt>
<dd>Fitted object from <code>scale_group_means</code></dd>

</dl>

scale_group_means: Scaling of Group Means and Standard Deviations

Description

Usage

Value

Arguments

Examples