Unclassed choropleth maps are similar to classed choropleth maps; however, unclassed choropleth maps do not have an averaged statistic towards each particular color. If you wish to create a map that maintains the data relation,
unclassified
data theoretically does a better job than
classified data because unclassified data allows us to maintain the
numerical relations
between data. This means that the color shades
on an unclassified map are directly proportional to the values of each
enumeration
unit; there are many shades of each color to show the diversity of the statistics. This unclassified map contrasts the democrats (blue) from the republicans (red). Most states are not completely republican or democratic so there are many shades of the combined blue and red which make a purple hue.
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