@book{cb7841da8905474fa98f9b69ec3a70f5,
title = "Statistical properties of the K-index for detecting answer copying",
abstract = "This study investigated statistical properties of the K-index (Holland, 1996) that can be used to detect copying behavior on tests. A simulation study was conducted to investigate the applicability of the K-index for small, medium, and large datasets. In addition, the Type I error rate and the detection rate of this index were compared with the copying index of J. Wollack (1997). Several approximations were used to calculate the K-index. Results show that all approximations were able to hold the Type I error rates below the nominal level. Results further show that using the copying index results in higher decision rates than the K-indices for small and medium sample sizes (100 and 500 simulees).",
keywords = "Sample Size, Statistical Analysis, METIS-205697, Simulation, Cheating, IR-104121",
author = "R.R. Meijer and Leonardo Sotaridona",
year = "2001",
language = "English",
series = "OMD research report",
publisher = "University of Twente",
number = "01-06",
address = "Netherlands",
}