Hal
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Hal replied to the topic Question on 1.5 sigma shift in the forum General 13 years, 4 months ago
This paper explains the 1.5 nonsense :
http://www.qualitydigest.com/inside/six-sigma-article/six-sigma-lessons-deming-part-1
… and this one for more detail on the origins of the 1.5:
http://www.qualitydigest.com/node/5900 -
Hal replied to the topic Question on 1.5 sigma shift in the forum General 13 years, 4 months ago
It was invented by Mikel Harry. Read his original derivation and you will find that it was based on stacks of disks !!! Incredible but true.
The 1.5 drift (and later “correction” then “dynamic mean offset”) is pure rubbish ! -
Hal replied to the topic Help with some Learning Exercises in the forum General 13 years, 4 months ago
All questions are impossible to answer because in real world situations it is impossible to ever know the data distribution.
It takes 3200 measurements to determine the distribution to 2.95 sigma but by the time you do this, the distribution will have changed.
Tell your tutor the questions are meaningless. -
Hal replied to the topic isssp in the forum General 14 years, 8 months ago
ISSSP is very good with lots of presentations from various customer segments, video, case studies, and articles.
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Hal replied to the topic Seek the truth about six sigma in the forum General 15 years, 5 months ago
It is one thing to have snake oil merchants flogging the nonsense of six sigma to the naive, but it is quite pathetic to hear that a professor is actually teaching it.
Read the truth here: http://users.bigpond.net.au/SixSigmaFallacies/ -
Hal replied to the topic Measurement Tool Question in the forum General 15 years, 5 months ago
It would be nice, just for ince, to see someone here who knows how to describe a problem. SS training gets so lost in numbers it forgets what it is trying to achieve.
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Hal replied to the topic Six Sigma at Japan in the forum General 15 years, 5 months ago
You are confused (or perhaps trying to mislead readers). Your links make no mention of Honda using six sigma. Honda uses Quality Circles.
“Honda Cars Makati, Inc. (HCMI) scored a major victory when it won the Gold Award in the 2005 Productivity Improvement Circles National Convention “…[Read more] -
Hal replied to the topic Black Belts not 100% dedicated – can it work? in the forum General 15 years, 6 months ago
Remember the Ford Edge story … 10,000 dedicated black belts couldn’t make it work … and they had to call in outside help.
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Hal replied to the topic what is the six sigma? in the forum General 15 years, 6 months ago
BritW,
“Making the leap that all we need to do (or that Smith was advocating) is to widen specs and we all look better, sell more, and make more money, is rediculous.”
Good to see that you have realized the stupidity of six sigma !!!!!!!!!!!! -
Hal replied to the topic Non-Normal Data in the forum General 15 years, 6 months ago
With reference to processes, and not surveys of people and other such enumerative studies that are frequently quoted here, how many processes do you actually think are perfectly normally distributed ?
Have you ever used a Pearson lack of fit test ? -
Hal replied to the topic Non-Normal Data in the forum General 15 years, 6 months ago
One of six sigma’s many flaws is it’s obsession with normal distributions. This appears to stem from six sigma tables which require data to be normal.
There is no need for data transforms. Control charts don’t need them, nor do histograms. Transformed data loses its meaning. Transforms will also require inverse transforms that become too com…[Read more] -
Hal replied to the topic Employee Turnover (Six Sigma Project) in the forum General 15 years, 6 months ago
Higher staff turnover is an inevitable consequence of six sigma. Compare the two approaches:
1. “In short, numbers-oriented thinking applies to people as much as it applies to processes and products. ” – Mikel Harry
2. “Remove barriers that rob the hourly worker of their right to pride of workmanship. The responsibility of supervisors must be…[Read more] -
Hal replied to the topic True Root Cause in the forum General 15 years, 6 months ago
“I thought six sigma is teachable science.”
You must be kidding !!!
Science doesn’t enter into it … read all the papers on SS … all it’s “facts” are fabrications. -
Hal replied to the topic six sigma companies in Asia in the forum General 15 years, 6 months ago
You could start with the Cambridge Mental Institute to see who they have certified.
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Hal replied to the topic Capability for a non normal distribution in the forum General 15 years, 6 months ago
Read “Normality and the Process Behaviour Chart”.
It will give you a new (non normal) way of looking at processes. -
Hal replied to the topic Histogram and Control chart in the forum General 15 years, 7 months ago
Readers will also notice the attempts at personal attack, when six sigma consultants like Stan are caught out preaching their nonsense.
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Hal replied to the topic Toyota – Continuous Improvement – NO 6S in the forum General 15 years, 7 months ago
When six sigma’s failures are discussed and when the success of non six sigma companies like Toyota are discussed, I’m sure that intelligent readers here will notice the fear (terror ?) response from six sigma consultants like “No Child”.
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Hal replied to the topic Brit Who? in the forum General 15 years, 7 months ago
Slow driving, slow talking, slow thinking … a bit slow all around
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Hal replied to the topic Define the term Sigma in Six Sigma in the forum General 15 years, 7 months ago
Bright eyes,
Whats the difference between sigma in a six sigma table and sigma in control charts ? -
Hal replied to the topic Origins of Six Sigma in the forum General 15 years, 7 months ago
Bill Smith did not “discover” 1.5. You can’t “discover” something that doesn’t exist. Read his paper. He pulls it out of thin air without reference or justification.
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