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The defect concentration diagram (also problem concentration diagram〔Bjørn Andersen, Tom Fagerhaug, and Marti Beltz, (Problem Concentration Diagram ), on https://ASQ.org; read 20. August 2015.〕) is a graphical tool that is useful in analyzing the causes of the product or part defects.〔Douglas Montgomery (2005). ''Introduction to Statistical Quality Control''. John Wiley & Sons, Inc. ISBN 978-0-471-65631-9〕 It is a drawing of the product (or other item of interest), with all relevant views displayed, onto which the locations and frequencies of various defects are shown. == Usage == Defect concentration diagram is used effectively in the following situations: #During data collection phase of problem identification. #Analyzing a part or assembly for possible defects. #Analyzing a product (or a part of a product) being manufactured with several defects. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Defect concentration diagram」の詳細全文を読む スポンサード リンク
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