Principles of Marketing 6-1 Session 6 Measuring and forecasting Market Demand Text:Chapter 4,Appendix 1 制计价蜀易大孝 国际商学院市场营销学系Principles of Marketing Measuring and forecasting Measuring and forecasting Market Demand Market Demand 6 － 1 6 － 1 Session 6 Text: Chapter 4 ，Appendix 1