Basic Quality Tools

A number of relatively simple tools have proven very effective in helping teams solve problems and improve quality. They are usually presented as “The Seven Quality Tools”, “The Seven Basic Tools”, or the like, but different authors have included different tools in the seven.

The most commonly listed tools are:
Check Sheet
Run Chart
Histogram
Pareto Chart
Scatter Plot
Cause and Effect Diagram
Flow Chart
Stratification
Control Chart

Another commonly helpful tool that doesn’t usually make the list of seven is the SIPOC model (for Supplier, Inputs, Process, Outputs, Customer).