data.mc

Data set of responses from multiple choice items, containing 143 students
on 30 items.

datasets

The package includes marginal and joint maximum likelihood
        estimation of uni- and multidimensional item response models
        (Rasch, 2PL, Generalized Partial Credit, Rating Scale, Multi
        Facets), fit statistics, standard error estimation, as well as
        plausible value imputation and weighted likelihood estimation
        of ability.

Thomas Kiefer

Test Analysis Modules

data.mc function

The data set comes as a list with two elements. The entry <code>raw</code>
  contains unscored (raw) item responses and the entry <code>scored</code>
  contains the scored (recoded) item responses. The format in detail is: <code>List of 2</code> <code>$ raw   : chr [1:143, 1:30] "A" "A" "A" "A" ...</code> <code>..- attr(*, "dimnames")=List of 2</code> <code>.. ..$ : NULL</code> <code>.. ..$ : chr [1:30] "I01" "I02" "I03" "I04" ...</code> <code>$ scored:'data.frame':</code> <code>..$ I01: num [1:143] 1 1 1 1 1 1 1 1 1 1 ...</code> <code>..$ I02: num [1:143] 1 1 1 0 1 1 1 1 1 1 ...</code> <code>..$ I03: num [1:143] 1 1 1 1 1 1 1 1 1 1 ...</code> <code>[...]</code> <code>..$ I29: num [1:143] NA 0 1 0 1 0 0 0 0 0 ...</code> <code>..$ I30: num [1:143] NA NA 1 1 1 1 0 1 1 0 ...</code>

data.mc: Data Set with Raw and Scored Responses from Multiple Choice Items

Description

Usage

Arguments

format