QC7つ道具、新QC7つ道具

QC7つ道具、新QC7つ道具（QC seven tools_ New seven tools for QC）

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1．単語

（１） QC7つ道具；　QC seven tools
　　　　/ パレート図；　Pareto diagram
　　　　/ 特性要因図； cause and effect diagram, characteristic diagram, Ishikawa diagram
　　　　/ チェックシート；　check sheet
　　　　/ ヒストグラム；　histogram
　　　　/ 散布図；　scatter diagram, scattergram
　　　　/ 管理図（グラフ）；　control chart, (graph)
　　　　/ 層別；　stratification

（２） 新QC7つ道具；　New seven tools for TQC

　　　　/ 親和図法；　affinity diagram
　　　　/ 連関図法；　relations diagram
　　　　/ 系統図法；　tree diagram
　　　　/ マトリックス図法；　matrix diagram
　　　　/ アローダイヤグラム法；　arrow diagram
　　　　/ PDPC法；　process decision program chart
　　　　/ マトリックスデータ解析法；　matrix data analysis

2.  例文

/ The objective of stratification is to grasp a problem or to analyze its causes by looking at possible and understandable factors or items.
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/ A Pareto diagram shows which defective items should be tackled first.
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/ Checksheets come in several types, depending on the objective for collecting the data.
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/ A scatter diagram is a tool for analyzing relationships between two variables.
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/ A Histogram is a picture of variation or distribution, where data has been grouped into cells and their frequency represented as bars.
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/ Control charts, first proposed by W. A. Shewhart of Bell Telephone Laboratories in 1924,　are used for maintaining both process and　manufacturing control in a stable condition.
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/ Ishikawa diagram composed of lines and symbols is designed to represent the　relationship between effects and their causes.
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/ In its original form, matrix data analysis was heavy on mathematics.
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/ The arrow diagram can be simple and straightforward, but over time its use has evolved to that of organizing and monitoring complex projects and situations.
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/ Matrix diagrams can be used to show the relationship between two, three or four groups of information.
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/ PDPC is a visual tool that combines and builds on elements of several other techniques.
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ORG:2018/4/2