Lean Six Sigma: Tools Guide
10 tools most commonly used for team analysis and decision making.
Process Flow Diagram
- a graphic representation of the steps in a process
- used to define, understand, and locate non-value added steps in the process
Cause and Effect Diagram with CNX
- a structured approach to identify root causes of a given effect
- identifies all variables that can affect a response with either a C (controllable), N (noise), or X (experimental)
Pareto Diagram
- a bar chart for non-numerical categories given in descending order
Histogram
- a bar chart for numerical categories which shows the distribution of a quantitative variable
Scatter Diagram with Regression Modeling
- used to study relationships between variables
Control Chart
- a run chart with control limits and a center line
- used to separate natural variation from special causes
Gage Capability Analysis
- used to assess how much variation is associated with the measurement system and to compare it to the total process variation
Failure Mode and Effect Analysis (FMEA)
- a method to identify failure modes and their effects in order to mistake-proof the process
Quality Function Deployment
- a systematic method of turning customer requirements into a prioritized list of design requirements
Design of Experiments
- the most efficient way to collect data and turn it into information