stratified_feldt

Compute the stratified Feldt's coefficient for a test composed of several
item strata (e.g., subtests or subscales).

Provides functions for computing test reliability and conditional
standard error of measurement (CSEM) based on the methods described in
the Reliability in Educational Measurement chapter of the 5th edition of
"Educational Measurement" by Lee and Harris (2025, ISBN:9780197654965).

Huan Liu

emreliability

Test Reliability and CSEM in Educational Measurement

Won-Chan Lee

Min Liang

stratified_feldt function

<dl><dt>x</dt>
<dd>A data frame or matrix containing item responses, with rows as
subjects and columns as items. Items are assumed to be ordered by stratum.</dd>
<dt>s</dt>
<dd>A numeric vector giving the number of items in each stratum. The
sum of <code>s</code> must equal <code>ncol(x)</code>.</dd></dl>

Arguments

Stratified Feldt's Coefficient — stratified_feldt

<dl>

<dt>x</dt>
<dd>A data frame or matrix containing item responses, with rows as
subjects and columns as items. Items are assumed to be ordered by stratum.</dd>


<dt>s</dt>
<dd>A numeric vector giving the number of items in each stratum. The
sum of <code>s</code> must equal <code>ncol(x)</code>.</dd>

</dl>

stratified_feldt: Stratified Feldt's Coefficient

Description

Usage

Value

Arguments

Details

Examples