Abstract:
This purpose of this independent study aims to forecast and planning sustain purchase for case study of Dek-Own Yentafo Mor-Fire. The material of product is raw of hot pot that have problem of purchase that by researcher study the type of each product amount 9 items since 28 march until 2 April 2017 [total 53 weeks]. All of data is use forecast the sustainable of case study by Exponential and join forecast after that analytical forecasting compare of each type correctly .To choose the best forecasting technique, the accuracy of those is considered by comparing the errors among different methods. And the popular measurements of errors that have been used widely are the Mean Square Error or MSE, and the Mean Absolute Percentage Error or MAPE. From 3 type of forecast, we compare the result and analytical of all data to find strategy to reduce cost. The forecast of purchasing plan for next year, The Detail is
The result of forecasting in 9 raw material found (1) The Exponential smoothing method is the best way to forecast the 9 raw material. (2) hybrid holt winters exponential smoothing and (3) Mixed method it is not appropriate to forecasting of 9 raw material of Dek Own Yentafo Mor-Fire By the way, the entrepreneur should to make the Exponential smoothing method to apply purchase planning for Dek Own Yentafo Mor-Fire. Its helps for purchase planning 9 raw materials on each Mae Fah Luang University calendar and reduce cost of inventory and increase sale 30 % Of total sales per year