The seven basic quality tools (7QC) are
- cause-and-effect diagrams, also known as fishbone diagrams or Ishikawa diagrams
- flowcharts
- checksheets, also known as tally sheets
- Pareto diagrams
- Histograms
- Control charts
- Scatter diagrams
Related: Plan quality management, Control quality
The seven basic quality tools are described in the PMBOK, 5th edition, section 8.1.2.3.