Abstract
A Phase I control chart that is distribution free is proposed for processes that are in control. The proposed method achieves in-control performance when used with both normal and nonnormal data and is sensitive to subgroup differences in process scale. Guidance is provided for combining this method with an existing distribution-free Phase I chart for studying process location.
| Original language | American English |
|---|---|
| Journal | Journal of Quality Technology |
| Volume | 42 |
| State | Published - Jan 1 2010 |
Keywords
- Distribution-free procedures
- Nonparametric method
- Process control
- Shewhart control chart
- Statistical process control (SPC)
DC Disciplines
- Education
- Mathematics