Comparison of two visualization tools in supporting comprehension of data trends

Abstract

This study compares two commonly used visualization tools, Gapminder and Tableau Public at simple and integrated level, to assess which tool better support user comprehension of data trends in a large dataset. Forty-seven participants were presented with a data set through Gapminder or Tableau Public at either a simple or integrated level. Then each participant was asked to answer questions about what they observed, showing their understanding of the information as well as rate ease-of-use of the tool. The results show that use of animation in Gapminder helped users comprehend data trends, whereas designs that assume prior geographical knowledge of users hampered their performance. Participants achieved higher accuracy with the graphs rated as easier to use. The results suggest that design of visualization tools should use familiar visual features and consider ease-of-use factor to assist user’s comprehension of data trend.