Data Quality @ GESIS
More data quality
- by the Competence Center for Data Quality in the Social Sciences KODAQS
KODAQS supports the quality-assured handling of data and provides researchers with innovative tools and comprehensive training opportunities. In addition to the survey data that is still predominantly used, this also includes digital behavioral data and the linking of this data with geodata, for example.
The KODAQS Academy...
... teaches theoretical and practical data science skills for evaluating the quality of different types of data and their analyses.
The KODAQS Toolbox...
... offers practical tools to independently check and improve the quality of survey data, digital behavioral data and linked data.
Guest research stays
Through the guest research stays, we promote young scientists and their research on data quality in the social sciences.
Support to improve quality
... of survey data
... of digital behavioral data
Services for the data collection
Services for the collection of survey data
Questionnaire development
Services for the creation and evaluation of survey instruments such as questionnaires, items, etc.
Services for samples
Drawing of telephone samples and complex samples such as municipalities for population registration office samples
Services for the collection of digital behavioral data
Services for analysis
Services for analyzing survey data
Adjustments of complex data
Weighting, imputation of missing values and non-response bias analysis for analyzing complex data