Six Sigma Fundamentals: A Complete Introduction to the System, Methods, and Tools
|
| Symbol/Acronym | Meaning |
|---|---|
| ANOVA | Analysis of variance |
| COPQ | Cost of poor quality |
| DFSS | Design for six sigma |
| DOE | Design of experiments |
| Dpm (DPM) | Defects per million |
| FMEA | Failure mode and effect analysis |
| LCL | Lower control limit |
| LSL | Lower specification limit |
| PSM | Program safety management |
| ROI | Return on investment |
| RPN | Risk priority number |
| SOP | Standard operating procedure |
| SPC | Statistical process control |
| UCL | Upper control limit |
| USL | Upper specification limit |
| MPIW | Mistake proofing improvement worksheet |
| e | Base of natural logarithm (2,718) |
| μ | Population mean |
| ∑ | Summation |
| σ | Population standard deviation |
| σ2 | Population variance |
| n | Sample size |
| N | Population size |
| p | Probability or sample proportion |
| r2 | Sample coefficient of determination |
| s | Sample standard deviation |
| s2 | Sample variance |
| | Sample mean |
|