
17
2
The Classic Seven Quality Tools
for Root Cause Analysis
e classic seven quality tools were originally published as articles in
the late 1960s in the Japanese quality circle magazine Quality Control
for the Foreman. Around that time, most Japanese books on quality were
too complicated for factory foremen and production workers, so Kaoru
Ishikawa used the articles from Quality Control for the Foreman as a basis
for the original 1968 version of Guide to Quality Control. e book was
frequently used as a textbook for tools in quality (Ishikawa, 1991).
e seven tools as dened by the American Society for Quality are the
owchart for graphically ...