A unified approach to basic concepts in collection, analysis, and interpretation of data, emphasizing capabilities of different statistical methods and business applications. Students use statistical software packages. For 186T, one lecture hour a week for one semester; for 286T, four lecture hours a week for half a semester; for 386T, three lecture hours a week for one semester. Offered on the letter-grade basis only. Prerequisite: Graduate standing and admission to the McCombs School of Business.