Midwest State University Office of Registrar isreviewing the universitys enrollment for the past 10 years. It isknow that there are seasonal variable that affects the universitysenrollment. To be better able to address business decisions thatare affected by enrollment an analysis of data was necessary. Theschool operates on a quarter system of enrollment startingtypically with fall quarter and ending with summer quarter. Theanalysis of the data produced these four quarterlyindexes.