This article analyzes how data visualization charts are used in United States Congress. It gives good, bad, and ugly examples to give the idea that not all congressmen are good at data visualizations, and sometimes, they fail to convey their ideas to their audiences.
Audience: Congress, CSPAN audience, public who concern about this topic.
Purpose: Using data visualization to show how important their proposals are, and influence them voting for them, not voting against them.
Advantage: A simple and powerful bar chart will represent the data clearly and convey a simple idea to the audience. For example, the first bart chart in “The Good” part created by Senator Dianne Feinstein send a clearly message: “Two-Thirds of Gun Owners want to renew the assault weapons ban.”
Disadvantage: Since the article is written in 2014, probably most of them are lack of data visualization knowledge. I see two bar chart and two hamburgers in this blog post. From this class, there should never be bar charts in the congress. They should consider using tableau instead of drawing cars like the last visualization. Since the data visualization technology is developing fast nowadays, i believe it is better for congressmen to take one or to data visualization class.
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