摘要:Forecasting is something that must be considered by the management companyin order to maintain the survival of the company, it is also useful to deal withcompetition problems with the sale of similar companies. Forecasting is alsouseful to see whether the policies that have been taken by the company in termsof sales in prior periods was appropriate or should be improved. Repairs arecarried out in order to maintain its position in world trade, and to keep a profit.To find out how many sales out fried either in rupiah or in units that must beachieved, then the index is to be forecast based on real sales data has beenprocessed by the Company Sumedang Sindang Know Pain from 1999 until theyear 2008.. Based on the results of sales forecasting know Sumedang in rupiahand the unit turned out better quadratic trend method used by the companybecause it has the smallest error rate. To know Sumedang sales in the rupiah hasthe smallest error rate is 0.1 and generates the largest sales forecast that is Rp.76.603 million, -. While to know Sumedang in unit sales have the lowest errorrate is 0.3 and generate the biggest sales forecast of 323 461 units.