This best-selling and up-to-date survey of decision analysis concepts and techniques is accessible to students with limited mathematical backgrounds. It is designed for advanced undergraduate and MBA-level courses in decision analysis and also for business courses in introductory quantitative methods. (Prerequisites: college algebra; introductory statistics.)
My dad wrote this. I've never read it, not being much of a graduate student in any business school, but I hear good things. I guess if you like decision analysis, this would be right up your ally.