CTTkey

<p>This example data contains a key for the 20 unscored multiple-choice items found in CTTdata and can be used with the CTT package.</p>

datasets

A collection of common test and item analyses from a classical test theory (CTT) framework. Analyses can be applied to both dichotomous and polytomous data. Functions provide reliability analyses (alpha), item statistics, disctractor analyses, disattenuated correlations, scoring routines, and empirical ICCs.

John T Willse

Classical Test Theory Functions

CTTkey function

<p>The format is:
 chr [1:20] "D" "C" "A" "D" "D" "A" "D" "B" "D" "A" ...</p>

CTTkey: Example Multiple-Choice Key

Description

Usage

Arguments

Format

See Also

Examples