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Graphics | Handouts | Advice from the PGF manual (chapter 6)
- Pie charts are visual disasters
- Bar charts with error bars are often used by researchers to hide the raw data and thus are often unscientific; for continuous response variables that are skewed or have for example fewer than 15 observations per category, the raw data should almost always be shown in a research paper.
- Dot charts are far better than bar charts, because they allow more categories, category names are instantly readable, and error bars can be two-sided without causing an optical illusion that distorts the perception of the length of a bar
- Directly label categories and lines when possible, to allow the reader to avoid having to read a symbol legend
- Multi-panel charts (dot charts, line graphs, scatterplots, box plots, CDFs, histograms, etc.) have been shown to be easier to interpret than having multiple symbols, colors, hatching, etc., within one panel
- Displays that keep continuous variables continuous are preferred