src/main/java/org/olat/ims/qti21/AssessmentItemSession.java

src/main/java/org/olat/ims/qti21/QTI21Service.java

src/main/java/org/olat/ims/qti21/QTI21StatisticsManager.java

.../org/olat/ims/qti21/manager/AssessmentItemSessionDAO.java

...ain/java/org/olat/ims/qti21/manager/QTI21ServiceImpl.java

...rg/olat/ims/qti21/manager/QTI21StatisticsManagerImpl.java

...g/olat/ims/qti21/model/jpa/AssessmentItemSessionImpl.java

...at/ims/qti21/model/statistics/SimpleChoiceStatistics.java

...rg/olat/ims/qti21/ui/AssessmentTestDisplayController.java

...i/statistics/QTI21AssessmentItemStatisticsController.java

...ims/qti21/ui/statistics/QTI21StatisticResourceResult.java

.../java/org/olat/ims/qti21/ui/statistics/SeriesFactory.java

...lat/ims/qti21/ui/statistics/_content/statistics_item.html

.../ims/qti21/ui/statistics/_i18n/LocalStrings_de.properties

...s/interactions/ChoiceInteractionStatisticsController.java

...istics/interactions/UnsupportedInteractionController.java

.../qti21/ui/statistics/interactions/_content/hbar_item.html

...tistics/interactions/_content/statistics_interaction.html

...ti21/ui/statistics/interactions/_content/unsupported.html

.../static/js/jquery/openolat/jquery.statistics.chart.min.js