The teaching courses in business forecasting. And sales forecasting in the program. The Board of Management Science Silpakorn University Meet complex computational problems in measurement accuracy of forecasting methods change direction. Making it difficult to apply Therefore, the calculation accuracy in predicting the online system with precision measurement of the change in direction. It has been developed For the purposes of this study were 1) to develop a program to calculate the accuracy of forecasting methods DCA online, and 2) to provide instruction in the use of calculation accuracy in predicting how the DCA on the online system. For students,
the results showed that: 1) The program consists of three parts, namely imports developed
real value and forecast data. The calculation accuracy in forecasting. And export graph
data and predictive value. This application is developed using PHP and MySQL database management system with html and installed on the system online. Available semester academic year 2557, 2) to determine the accuracy of calculating the accuracy of the program compared to the spreadsheet program Excel matched 100 percent by the share prices of PTT, pineapple prices in Thailand. And the weather in Mae 3) the satisfaction of applications from faculty and students involved were 113 people at a high level overview. The average was 4.12, and 4) Assessment Manual programming of the three qualified persons, mostly in very good level.
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