http://improving-visualisation.org/vis/id=3
This is a funnel plot and a map. On the left hand side, there is a univariate choropleth map showing the proportion of the population which are in criminal institutions. The classifications are divided by quantiles. Each of the regions is a data point in the funnel plot. The Number of People Institutionalized is on the x-axis, and the Percent of the Population Institutionalized is on the y-axis. The Iberville Parish is highlighted by the yellow lines. It has roughly 3,000 people in prison, which is 93% of the population. The funnel plot is a tool to give more information to a choropleth map.
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