simulated.data

Data with 40 items is simulated based on the Nominal Response IRT Model (Bock, 1972). Each variable (column) represents an item and is a "character" variable. This is necessary to be able to run the <code><a rd-options="" href="/link/CopyDetect2?package=CopyDetect&version=1.2" data-mini-rdoc="CopyDetect::CopyDetect2">CopyDetect2</a></code> function. The items are assumed to have five response alternatives: A, B, C, D, and E.
The item parameters used to generate data are taken from Wollack's study (1996).

Contains several IRT and non-IRT based statistical indices proposed in the literature for detecting answer copying on multiple-choice examinations. Includes the indices that have been shown as effective and reliable based on the simulation studies. Provides results for the Omega index, Generalized Binomial Test, K index, K1 and K2 indices, and S1 and S2 indices.

Cengiz Zopluoglu

CopyDetect

Computing Statistical Indices to Detect Answer Copying on
Multiple-Choice Tests

simulated.data function

A data frame with 500 hypothetical simulees.

Format

Data with 40 items is simulated based on the Nominal Response IRT Model (Bock, 1972). Each variable (column) represents an item and is a "character" variable. This is necessary to be able to run the <code><a rd-options='' href='CopyDetect2'>CopyDetect2</a></code> function. The items are assumed to have five response alternatives: A, B, C, D, and E.
The item parameters used to generate data are taken from Wollack's study (1996).

simulated.data: Simulated Data Based on Nominal Response IRT Model (Bock, 1972)

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