Minitab offers several graphical tools to help you explore and detect quality problems and improve your process:
Run charts detect patterns in your process data, and perform two tests for non-random behavior.
Pareto charts help you identify which of your problems are most significant, so you can focus improvement efforts on areas where the largest gains can be made.
Cause-and-effect (fishbone) diagrams can help you organize brainstorming information about the potential causes of a problem.
Multi-vari charts present analysis of variance data in graphical form to give you a "look" at your data.
Symmetry plots can help you assess whether your data come from a symmetric distribution.