在商业经济学的领域里,商业销售额的预测是一项很棘手的工作,因为它不象大部分工程材料那样,服从于设计上应用的各种物理学规律。销售额预测工作是直接为公司制定政策服务的。企业的预算、产品的品种和产量的安排、销售和市场开发,资本的筹措和财务计划的拟订等等,都需要销售预测 In the field of business economics, the prediction of commercial sales is a difficult task because it is not subject to the laws of physics applied to the design, as most engineering materials do. Sales forecasting work directly for the company to formulate policy services. The company’s budget, product variety and production arrangements, sales and market development, capital raising, and financial plan development all require sales forecasts.