미국대학 데이터 시각화 사례들과 설명 및 이해 Columbia Univ Data Viz Examples and explanations of Data Visualization

Source: “Choropleth Maps and Census Data,“ http://my.ilstu.edu/~jrcarter/Geo204/Choro/
Description
The choropleth map above includes 50 US states and Puerto Rico. The map portrays the number of male population per 100 females in each region in year 2000. The higher the ratio of male vs female, the higher the magnitude (the saturation increases, hence darker color). Nevada and Alaska are dominated by males while several eastern states show dominance of female population.
Data Type
G