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Francis, Krista; Jacobsen, Michele; Friesen, Sharon – Journal of Information Technology Education: Research, 2014
Visuals and graphics have been used for communicating complex ideas since 1786 when William Playfair first invented the line graph and bar chart. Graphs and charts are useful for interpretation and making sense of data. For instance, John Snow's scatter plot helped pinpoint the source of a cholera outbreak in London in 1854 and also changed…
Descriptors: Graphs, Charts, Longitudinal Studies, Statistical Data