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CHART CRITICS, GRAPHICS CURMUDGEONS, COME ONE COME ALL
Once upon a time there was this graph (graph 1).
Now the question is, which is better: graph 2 or graph 3?
Please use the comments and logic. Thank you.
As a result of all the feedback here. The following chart was chosen for use in the publication (Proceedings in the National Academy of Sciences):
Photo credit: http://www.flickr.com/photos/emeryjl/2104152944/. Graphs 1 and 3 have four categories and graph 2 has five categories. Also, there is a missing label on graph 3’s horizontal axis. Assume you are deciding among graphs of these basic forms that have equivalent numbers of groups and identical axis labeling.