Dear Colleague, The visualization and analysis of incomplete data is an area that has not received much attention from the research community, although it is a challenge experienced in many areas of data analysis. You are invited to participate in a survey that aims to evaluate the performance of three visualization methods from the R-package VIM (https://cran.r-project.org/web/packages/VIM/VIM.pdf), in the context of displaying incomplete data. From your responses we will be able to evaluate what type of visualization may be best for solving particular tasks, and through this provide guidance for future research. The study is completely anonymous and is part of a project at University of Northumbria at Newcastle, UK. It starts with an instructive video, followed by a set of tasks that will take around 15 minutes to complete. If you have any questions or comments regarding the study, please contact sara.fernstad@northumbria.ac.uk<mailto:sara.fernstad@northumbria.ac.uk>. To the study: https://northumbria.onlinesurveys.ac.uk/survey-visualization-of-missing-data Your participation is important and very much appreciated! Kind regards, Sara ________________________________________________________________ Dr Sara J Fernstad Senior Lecturer Department of Computer and Information Sciences Northumbria University Newcastle upon Tyne NE2 1XE United Kingdom E-mail: sara.fernstad@northumbria.ac.uk<mailto:sara.fernstad@northumbria.ac.uk> Phone: +44 (0)191 243 7384 Office: Pandon 243 http://fee.northumbria.ac.uk/staff/jlhv8 http://fee.northumbria.ac.uk/staff/jlhv8/nova/