Unclassed Choropleth Map

Link here.
An unclassed choropleth map uses a continuum of shading to display the data. Unlike with classed choropleth maps, these don't have colors that represent ranges of data. Instead, each color represents a specific data score. In unclassed maps it is difficult to show each individual score, but they are useful for making general judgments.We may not know what the exact scores are, but we do know that France is a darker color than Spain, so France has a higher fertility rate than Spain.