7. Proportional Symbol map, This map uses a basemap made Ar…

This map uses a basemap made ArcGIS using the NAD83 Datum and the North America lambert Conformal Conic projection. The data was acquired from the Roller Coaster Database, 2006. This map is a proportional symbol map that shows the number of rollers coasters per U.S. State. The data was analyized in excel and by taking the square root of number of roller coaster and then fixing the square root to a percentage with the largest number being 100%. The circle were then scaled in Adobe Illustrator CS6 using the transform tool to scale them to a percentage. Labels, the scale and colors were added in Illustrator, along with the extended legend which shows the 5- number summary of the data ( min, first quartile, median, last quartile, max). The circles were made partly transpart and given a radial gradient to stand out as well as to allow to see the structures under them.

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Solved The map below is an example of a proportional symbol

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