Comments on: The 1.5 Sigma Shift in Six Sigma https://6sigma.com/the-1-5-sigma-shift-in-six-sigma/ Six Sigma Certification and Training Fri, 28 Feb 2025 12:16:00 +0000 hourly 1 By: Brion Hurley https://6sigma.com/the-1-5-sigma-shift-in-six-sigma/#comment-25939 Sun, 07 Nov 2021 18:02:18 +0000 https://opexlearning.com/resources/?p=22269#comment-25939 In reply to William.

Thank you for catching the error. We have fixed the typo.

]]> By: William https://6sigma.com/the-1-5-sigma-shift-in-six-sigma/#comment-25938 Fri, 05 Nov 2021 06:42:32 +0000 https://opexlearning.com/resources/?p=22269#comment-25938 Your table has a typo error.

At 4.5 Sigma Level (Short-term), the DDPMO is 6.8 (not 3.4) as shown.

Refer

http://www.sixsigmadigest.com/support-files/DPMO-Sigma-Table.pdf

]]> By: Georgi https://6sigma.com/the-1-5-sigma-shift-in-six-sigma/#comment-25937 Thu, 25 Jul 2019 10:22:12 +0000 https://opexlearning.com/resources/?p=22269#comment-25937 “this is not an actual discrepancy, but a feature that manages expectations according to reality and makes a process more robust in the long-term.” – how is this any better than calculating the sigma level using 0.5 sigma, 3 sigma, or 10 sigma shift? Furthermore, if you actually expect the process to perform as a 4.5 sigma one, why report it as 6 sigma in the first place, why not report it as 4.5 sigma? I’ve made a lengthier argument against sigma shift as a concept here: https://www.gigacalculator.com/articles/what-is-six-sigma-process-control-and-why-most-get-it-wrong-1-5-sigma-shift/

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