Tools & Techniques
1) Pareto Diagrams
Separate the vital few from the trivial many causes, provide direction for selecting projects for improvement.
Pareto charts are extremely useful for analyzing what problems need attention first because the taller bars on the chart, which represent frequency, clearly illustrate which variables have the greatest cumulative effect on a given system.
2) Control Chart
Primary purpose of control charts is to indicate at a glance when production processes might have changed sufficiently to affect product quality.
If the indication is that product quality has deteriorated, or is likely to, then corrective is taken.
If the indication is that product quality is better than expected, then it is important to find out why so that it can be maintained.
Use of control charts is often referred to as statistical process control (SPC).
3) Inspection
Check for optimum process conditions before processing is done and errors can be made.
Instant feedback.
Corrections made before defects occur.
4) Cause Effect Diagram