IMS Global QTI Glossary of Terms for Usage Data Distractor Statistics http://www.imsglobal.org/qti/qtiv2p2/distractorstatisticsglossaryv1p0 AISResponse Average Item Score for Response Equal to the mean of the item scores for the group of indviduals that selected the response option. Distractor Statistics, AISResponse, IMS Global QTIv2.2 IMS Global publisher IMS Global Learning Consortium Inc. 2015-03-01 Final NumberChoosingResponse The number of people choosing a specified response or getting a specified code. Equal to the number of individuals that selected the response option. This can also be used for the number of individuals that received a certain rating on a judged item such as an essay question. Distractor Statistics, Number Choosing Response, IMS Global QTIv2.2 IMS Global publisher IMS Global Learning Consortium Inc. 2015-03-01 Final PTbis-Response r-pointbiserial for Response A group-dependent measure of the discrimination of the response option, the pointbiserial correlation between selection of the response option and a criterion such as the total score on the test. Distractor Statistics, PTbis-Response, IMS Global QTIv2.2 IMS Global publisher IMS Global Learning Consortium Inc. 2015-03-01 Final ParentChoosingResponse The percent of people choosing a specified response or getting a specified code. Equal to the percent of test takers that selected the response option. This can also be used for the percent of indviduals that received a certain rating on a judged item such as an essay question. Distractor Statistics, Percent Choosing Response, IMS Global QTIv2.2 IMS Global publisher IMS Global Learning Consortium Inc. 2015-03-01 Final QTIv2.2, Usage Data, Distractor Statistics Glossary en-US Description: The set of terms that would be used to collect distractor statistics. This is the value that will be entered in the 'name' element. History: The first formal release of this QTI Glossary as part of QTIv2.2. author Colin Smythe (IMS Global, UK) and Mark McKell (IMS Global, USA) 1.0 Final release publisher IMS Global Learning Consortium Inc. 2015-03-01 yes 2015 (c) IMS Global Learning Consortium Inc. XML