My research interest is in data visualization literacy.

Many data visualization practices help improve comprehension. For my dissertation study, I explored different data visualization practices and comprehension. I also asked participants about their self-perceptions and preferences for data and graphics.

My study assessed how different data visualizations related to data comprehension. I used the subjective numeracy (SNS) and subjective graph literacy (SGL) scales. I ran a randomized control study, presenting the same data in tables and charts. Each group saw a table or chart from a government report. Two groups viewed the original (control) table or chart. The other two groups view a modified (best practice) table or chart.

SUMMARY OF FINDINGS:

1/ People who viewed tables had better data comprehension than those who viewed charts.

2/ People who viewed the best practice chart had better data comprehension than those who viewed the stacked bar chart (control).

3/ Participants who reported high SNS or SGL had better data comprehension. There was one exception: People who reported high SGL had lower data comprehension in one scenario.

4/ There was a positive association between the participants’ data comprehension and their SNS and SGL scores.

Data visualization, numeracy and graph literacy: Seeing and thinking of data presented as tables or charts.

Tsagaroulis, P. (2020). Data visualization, numeracy and graph literacy: Seeing and thinking of data presented as tables or charts (Publication No. 28087022) [Doctoral dissertation, The Chicago School]. ProQuest Dissertations & Theses Global. https://search.proquest.com/openview/0d121f049421059e712f7a7ef4bda3c3

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