How do I represent multiple data points (with same zip) with with a larger symbol?

[KrissyLukens]

I have a .csv with conference attendees from various colleges around the US. Some of the colleges had multiple attendees. I'd like my symbology to represent those schools with a larger circle/dot than the schools that only had one attendee. How do I go about doing this?  Sample Map Screenshot . I'm using Unique Symbols, with the School attribute as the indicator of what is showing. #uniquesymbols

[KellyGerrow · Accepted solution]

Hi,

If you just want to display the size, try using the number of attendees as your attribute to style and use counts and amounts to show the difference in size:

Style numbers—ArcGIS Online Help | ArcGIS 

If you want to map by categories (school) and the number of attendees, select both attributes and use types and size:

Style categories—ArcGIS Online Help | ArcGIS 

Here is a link to a quick reference of available styles:

Change style—ArcGIS Online Help | ArcGIS 

-Kelly