From the tables 4-3 and you will see that the average efficiency of the design and development of natural gas separation plant Account PTT Rayong with Microsoft Access 2013 that respondents evaluate the efficiency level (x. ̅ = 4.03, S.D. = 0.97), so the system developed a very efficient level. Translation of the meanings of the criteria used, the estimated average estimated scale values (Assoc. Prof. Dr. Bun SI SA hits) Variable points to split 5 levels of satisfaction level by using the highest score minus the lowest score and divided by the number of levels that are wanted to split the criteria points.
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