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The 7 Basic Tools of Quality (or 7 QC Tools) is a set of relatively simple data analysis tools used to support quality improvement efforts.

These tools are fairly simple in that they don’t require sophisticated statistics to use (though control charts border on being too complex for the typical user to develop.)

The 7 Basic Tools of Quality are:

Cause and Effect Diagram (Ishikawa Diagram / Fishbone Diagram)
Control Chart
Pareto Chart
Scatter Diagram
Histogram
Check Sheet
Flow Chart