Z-Bench
Six Sigma
Z-Bench
Standard-normal Z value used to express process yield or defect performance on a sigma scale.
Examples
- 01The Z-Bench of the coating thickness is 3.2, combining defects above and below the limits into one value.
- 02In Measure, Z-Bench lets the team compare a process with only an upper limit, such as burr height, with one that has two limits.
- 03The baseline Z-Bench of 3.2 is recorded in the control plan, and the project goal is to reach 4.0 within six months.