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Six Sigma Tool Example: Individuals and Moving Range (I-MR) Charts
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- čas přidán 13. 05. 2014
- Individuals and Moving Range (I-MR) Charts are among the most useful Six Sigma and quality management tools. We call them Process Behavior Charts, while others call them Control Charts. Their fundamental job is to detect process instability. If there is no instability, then the process is stable and predictable, and is likely to work again tomorrow.
Three of the common errors and myths associated with Process Behavior Charts are discussed: Shewhart did not assume normality when he created the first Control Charts, there is no need to use Xbar and R charts to ensure normality, and it is not required that the Moving Range chart be in control before interpreting the Individuals chart.
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Individuals and Moving Range charts 0:27
Detects instability 0:40
No rule violation = stable and predictable 0:46
Rule violations = unstable 1:02
Accounts receivable example 1:17
Compare subgroups of data, test measurement systems 1:47
Normal distribution not required 2:09
Xbar and R charts useful, require more skill 2:34
Not required that the Moving Range chart be in control 3:06
Abundant information, insightful tool 3:38
I could listen to you talk about Six Sigma all day. Great voice, and very informative. Thanks
+Mac McIntire Thank you for the kind comment. We do try to be helpful.
Authoritative insight. Beneficial to professionals. Showcases expertise.
Sir , i feel very inspired by your command over the subject. If you don't mind me asking are you a professor or an professional working in the Industry !!
Why i am asking you this question is ,because
I want to know should i be pursuing in depth knowledge of six sigma, to be a successful professional in today's Industry ( most people make do with superficial knowledge and are successfully employed, who should i be)
mehtab bandesha Thank you for your kind words.
I am President of Promontory Management Group. We have been doing Six Sigma and related items since 1999.
The answer to your question really depends on what you want to do in your career.
For my career, working hard on knowing how the tools really work has paid off well. There are a great many wrong ideas taught in some Six Sigma programs, so be careful to choose one that doesn't have so many errors in it.