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Sarah Trefzger has diverse work experience in data analysis and consulting. Sarah currently holds the position of Lead Data Scientist at 84.51º since 2015. Prior to this, Sarah worked at dunnhumby from 2011 to 2015, where they held various roles including Associate Director, Senior Associate Analyst, and GIS Consultant. Sarah also has experience working at Macy's as a Sr. Analyst from 2008 to 2011, Analyst II from 2005 to 2008, and Analyst from 2003 to 2005. Sarah started their career as a Market Analyst at Telergy from 1998 to 2001.

Sarah Trefzger completed their Bachelor of Science degree in Marketing from SUNY Oswego in 1998. Sarah then went on to earn a Master of Science degree in Geography/Geographic Information Science from the State University of New York at Buffalo between 2002 and 2004.