Why Upper Specification Limits Matter in Process Improvement
Feb 6, 2025 · What is the upper specification limit? Find out how it relates to your data analysis, and how it benefits your process improvement.
Calculate Capability Indices with Only One Specification
Feb 11, 2025 · USL, upper specification limit; LSL, lower specification limit. *Estimated sigma = average range/d2 Common understanding includes the fact that Cpk climbs as a process improves – the …
Lower Specification Limit (LSL): Get to Grips with Your Production
Oct 13, 2024 · What is the lower specification limit? Find out how this measurement applies to your production and clues you into your processes.
Cp, Cpk, Pp and Ppk: Know How and When to Use Them
Oct 10, 2024 · These represent categorical variables, which by definition carry an ideal USL of 100 percent error-free processing, rendering the traditional statistical measures (Cp, Cpk, Pp, and Ppk) …
The Sigma Conversion Table Displays Yields That Don’t ... - iSixSigma
Feb 23, 2004 · Ask Dr. Mikel Harry Metrics The Sigma Conversion Table Displays Yields That Don’t Match My Understanding of USL/LSL for the Process. Could You Please Explain Why There Is a …
Cpk vs. Sigma Level: What’s the Difference? - isixsigma.com
Feb 18, 2025 · Cpk = min (USL-mean/3σ, mean-LSL/3σ) This means that Cpk is equal to the minimum value of these two calculations. For example, if USL-mean/3σ gives you 1.16 and mean-LSL/3σ …
What Is the Logic Behind a One Tail Defect, Or Is it That This ...
Feb 25, 2004 · In this instance, the CTQ was given an upper specification limit (USL). For the same 100 units of product, it will be accepted that only such one unit violated the thickness requirement. Thus, …
Ppk: A Critical Component of Quality Management Systems
Feb 10, 2025 · Ppk stands for Process Performance Index and is used for long-term variability.
Process Capability - The Basics: Part 1 - iSixSigma
Feb 27, 2024 · In Part 1, we explore the concept of process capability, including how to calculate it and what to do with non-normal data.
Process Capability (Cp, Cpk) and Process Performance (Pp ... - iSixSigma
Oct 8, 2024 · What differences arise between process capability and process performance? Learn all about how these indices relate in our handy guide.