As much as 95% of quality related problems in the factory can be solved with seven fundamental quantitative tools.
Kaoru IshikawaAs with many other things, there is a surprising amount of prejudice against quality control, but the proof of the pudding is still in the eating.
Kaoru IshikawaQuality control which cannot show results is not quality control. Let us engage in QC which makes so much money for the company that we do not know what to do with it.
Kaoru Ishikawa