what is the summary of the article "communicating population health statistics through graphs: a randomised controlled trial of graph design interventions?

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my instructor provided this scholarly article summarize. What type of data does the graph, chart, or table show (Quantitative or Qualitative data)? Explain how you came to that conclusion. What type of graph, table, or chart did you choose (bar graph, histogram, stem & leaf plot, etc.)? What characteristics make it this type ? Describe the data displayed in your graph,