@inproceedings{b01d666f61d1412eb98a38bf5d2108b5,
title = "A validity study for Yes/No Angoff standard setting method using cluster analysis",
abstract = "Test validity is a property of the interpretation assigned to test scores. To provide an objective validating evidence for a standard-referenced assessment is especially important. In this study we utilize a statistical technique, cluster analysis, to explore the validity of one of the expert judgement technique- Yes/No Angoff standard setting method. We first segregated each examinee ability cluster using the hierarchical clustering (HC). Assume that each ability cluster is a Gaussian distribution and that the distribution of each test subject data can be modeled by mixture of Gaussians (MoG), where the mean, variance and the proportion of each cluster were initialized by the HC results. Finally, the ability clustering was implemented by the expectation maximization (EM) method. The results from the traditional standard-setting procedure and cluster analysis were compared. The study suggested that cluster analysis could be applied as a support tool to provide validating information in the process of standard setting for high-stakes achievement tests.",
keywords = "cluster analysis, hierarchical clustering, mixture of Gaussian models, standard setting",
author = "Tseng, {Fen Lan} and Chiou, {Jia Min} and Yao-Ting Sung",
year = "2016",
month = jan
day = "13",
doi = "10.1109/FSKD.2015.7382032",
language = "English",
series = "2015 12th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2015",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "727--731",
editor = "Zhuo Tang and Jiayi Du and Shu Yin and Renfa Li and Ligang He",
booktitle = "2015 12th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2015",
note = "12th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2015 ; Conference date: 15-08-2015 Through 17-08-2015",
}