Asked by candy

Which chart would be more effective a bar graph or pie chart?
Answered by jim
Scientists and mathematicians tend to avoid pie charts, because humans have a harder time judging angles and areas than line lengths. The Wikipedia page on Pie_charts, which I just visited, shows examples of a pie chart with apparently equal-ish segments that show up as clearly different in a bar graph.

So if you want to show the differences clearly, go for bar charts!
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