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Download full textChen, Haiwen H.; von Davier, Matthias; Yamamoto, Kentaro; Kong, Nan – ETS Research Report Series, 2015
One major issue with large-scale assessments is that the respondents might give no responses to many items, resulting in less accurate estimations of both assessed abilities and item parameters. This report studies how the types of items affect the item-level nonresponse rates and how different methods of treating item-level nonresponses have an…
Descriptors: Achievement Tests, Foreign Countries, International Assessment, Secondary School Students
