Data Visualization of Outliers from a Health Research Perspective Using SAS/GRAPH and the Annotate Facility

SAS/GRAPH is a powerful tool for customizing the box plot to detect and identify outliers. This paper shows how to use the ANNOTATE facility and annotate data set to customize box plots and profile plots of outliers using data from a dietary-health study. This paper assumes: • A working knowledge of basic SAS/GRAPH procedures. • The ability to display or print graphics on your operating system. • A thorough understanding of the DATA step, since the ANNOTATE facility requires SAS data set. • An understanding of SAS/BASE global statements (e.g. TITLE, FOOTNOTE, OPTIONS, etc.). SAS skill level of this paper is intended for beginners to intermediate programmers.