Seven Basic Tools of Quality
QC七つ道具
1.
Cause-and-effect diagram
(also known as the "
fishbone diagram
" or
Ishikawa diagram
)
2.
Check sheet
3.
control chart
4.
Histogram
5.
Pareto chart
6.
Scatter diagram
7.
stratification
(alternatively,
flow chart
or
run chart
)
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Seven Basic Tools of Quality