Abstract:
At present, the economic conditions of the electronic components and electrical
appliances industry are highly competitive in the market. Due to the uncertainty of
consumer demand and have more competitors in the market .case study companies
don't have the tools to use appropriate forecasting and decision making in order to
estimate product orders based on work experience, regardless of statistical principles
applied in the analysis causing the shortage of products up to -29,800 pcs and losing
the opportunity to sell products worth as much as -2.58 million baht, which are
products of all 4 types of receptacles, 1.Single socket with ground and safety curtain,
2. Single socket with ground, 3. Dual receptacles with ground and safety curtain, and
4.Dual receptacles with ground . This Master project has the main objective of studying
a forecasting model suitable for forecasting the sales volume of the above 4 products.
This study began collecting data for the past 77 months. To find the appropriate data
model in forecasting The study found that the data format was uncertain. So the
forecast is made using the moving average method. The forecast was performed with
a single exponential smoothing method since both methods yielded the lowest
absolute error, or MAPE, and the forecast accuracy was monitored for a period of 4
months using a. Absolute error, or MAPE, is a measure of the accuracy or efficiency of
a forecast. It was found that if using the above-mentioned forecasting method, the
forecast accuracy was at a good level.