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...Ishikawa s basic tools of quality kaoru developed seven visual so that the average person could analyze and interpret data these have been used worldwide by companies managers all levels employees histograms slide histogram defined a is bar graph shows frequency provide easiest way to evaluate distribution creating collect sort it into categories then label as independent set or dependent characteristic you grouped would be variable each mark on either axis should in equal increments for category find related make horizontal marks show examples how can determine sales say instance company wanted measure revenues other compare numbers pareto charts chart are identify prioritize problems solved they actually aided rule adapted joseph juran remember states approximately created causes...