Analysis of Defective Causes in Coffee Product Using Decision Tree Approach

The development of Indonesian coffee through exploration of regional wealth needs to be done to add coffee products when expanding the domestic and overseas coffee market. But there are still many defective products found in domestic coffee, where defective products are products produced in the production process, where the product resulted is not in accordance with the applied quality standards, but it can still be improved by spending certain costs. The method used to identify defects in the product is assessed of space, workers and machinery aspects, and then a decision tree is made to determine the critical point. The results of the research conducted found that most defects are in coffee that does not has epidermis about 21% of the total sample of 23.000 grams. With fishbone diagrams and the decision tree approach the cause of the defect is known.