2.71.3.2 Algorithm for Process Overview

1 Normal Process Overview
2 Between/Within Process Overview
3 Non-normal Process Overview
- 3.1 Overall Capability
- 3.2 Probability Plot

Normal Process Overview

Standard Deviation Estimation

Please refer to Standard Deviation Estimation for the details of calculations for pooled standard deviation, average of subgroup ranges, average of subgroup standard deviations, average of moving range, median of moving range, square root of mean squared successive differences, and overall standard deviation.

Within Capability

Please refer to Potential Capability for the similar details of calculations for Cp, CPU, CPL, and Cpk.
Please refer to Expected Within Performance for the details of calculations for PPM < LSL, PPM > USL, and PPM Total.
Please refer to Benchmark Zs for Potential Capability for the similar details of calculations for Z.LSL, Z.USL, and Z.Bench.

Overall Capability

Please refer to Overall Capability for the similar details of calculations for Pp, PPU, PPL, Ppk, and Cpm.
Please refer to Expected Within Performance for the details of calculations for PPM < LSL, PPM > USL, and PPM Total.
Please refer to Benchmark Zs for Potential Capability for the similar details of calculations for Z.LSL, Z.USL, and Z.Bench, by using $\sigma_{overall}$ instead.

Between/Within Process Overview

Standard Deviation Estimation

Please refer to Standard Deviation Estimation section for the details of calculations for within subgroup standard deviation, between subgroup standard deviation, between/within standard deviation, and overall standard deviation.

Between/Within Capability

Please refer to Potential Capability section for the calculations of Cp, CPL, CPU, Cpk, and CCpk. The difference is that the $\sigma_{within}$ is replaced by $\sigma_{b/w}$ .
Please refer to Expected Within Performance for the details of calculations for PPM < LSL, PPM > USL, and PPM Total.
Please refer to Benchmark Zs for Potential Capability for the similar details of calculations for Z.LSL, Z.USL, and Z.Bench, by using $\sigma_{b/w}$ instead.

Overall Capability

Please refer to Overall Capability for the similar details of calculations for Pp, PPU, PPL, Ppk, and Cpm.
Please refer to Expected Within Performance for the details of calculations for PPM < LSL, PPM > USL, and PPM Total.
Please refer to Benchmark Zs for Potential Capability for the similar details of calculations for Z.LSL, Z.USL, and Z.Bench, by using $\sigma_{overall}$ instead.

Non-normal Process Overview

Overall Capability

Please refer to Non-normal Capability Analysis for more details about the calculations, including Pp, PPU, PPL, Ppk, PPM < LSL, PPM > USL, PPM Total, Z.LSL, Z.USL, and Z.Bench.