ShinyItemAnalysis Version 0.1
This application is developed with Shiny.
Ondrej LederList of Packages Used
If you discover a problem with this application please contact the project maintainer at martinkova(at)cs.cas.czAcknowledgments
Project was supported by grant funded by Czech Science foundation under number GJ15-15856YLicense
Copyright 2015 Patricia Martinkova and Ondrej Leder
This program is free software you can redistribute it and or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 3 of the License or at your option any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
Explanation: Difficulty of item is estimated as percent of students who answered correctly to that item. Discrimination is described by ULI (Upper-Lower Index) and by rule of thumb it should not be lower than 0.2 (borderline in the plot), except for very easy or very difficult items.