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BB replied to the topic Gage RR – Resolution in the forum General 14 years ago
Hi
What is the logic of the 1.41 factor in arriving at the no.of distinct categories ?
BB
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BB replied to the topic Lean Six Sigma Simulation in the forum Finance 14 years, 4 months ago
Hi Adam
Could you also email it to me at [email protected]
Many thanks
BB -
BB replied to the topic Full Time Black Belt Query in the forum General 14 years, 5 months ago
Cummins does
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BB replied to the topic Coding Multilevel Designs in the forum General 15 years ago
Thanks Rob
In BB class we were taught to use excel to code the table and then calculate the Average high and low, effect and coefficient to get the prediction equation.
Is this not the same thing as just setting up your design in Minitab using coded values. If so, if I have 4 factors with different levels, i.e. Temp & Time with two levels (…[Read more] -
BB replied to the topic Coding Multilevel Designs in the forum General 15 years ago
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BB replied to the topic Non Normal data in the forum General 15 years, 5 months ago
What??? No mention of Don Wheeler??? Are we converting you Steve???
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BB replied to the topic Non Normal data in the forum General 15 years, 5 months ago
There is no such thing as perfectly normal data. You will never know precisely your data’s distribution. Shewhart developed control charts without any assumption of data distribution. Note that Shewhart did not rely on the Central Limit Theorem.
Histograms also do not require any assumption of data distribution. -
BB replied to the topic Which is the right chart in the forum General 15 years, 5 months ago
Charting for charting’s sake is a waste of time. What is the problem you are trying to solve ?
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BB replied to the topic two sigma limits on control charts in the forum General 15 years, 5 months ago
Hi Harry ,
Could you please explain further : Why when n > 15 , we can forget the use of 3 sigma limits for sub-groups of the control chart. I want to learn.
Thanks ,
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BB replied to the topic sixsigmajust in time in the forum General 15 years, 6 months ago
It wouldn’t.
Six sigma has enough nonsense of it’s own without adding to it. -
BB replied to the topic Concentration PPM in the forum General 15 years, 6 months ago
If it was 800mg in 800g of product, that would be a concentration of 1000 ppm.
It’s not hard to see why I’m a black belt is it ? -
BB replied to the topic control chart for attributes and variables in the forum General 15 years, 7 months ago
Darth is correct. Advantages is not relevant. Perhaps the only “disadvantage” is that you need to ensure that your data follows the assumptions of each of the associated distributions. If not, use an XmR chart. Although less sensitive, it does not assume a particular distribution (there are many fallacies around this, largely propagated by aut…[Read more]
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BB replied to the topic Changing the Name? in the forum General 15 years, 7 months ago
Six sigma has been given a bad name by all the crap associated with it.
Continuous improvement in the true sense as used by Toyota, is far more useful. -
BB replied to the topic central limit theorem in the forum General 15 years, 7 months ago
Nice to see that no one has fallen into the error of claiming that control charts depend on the central limits theorem.
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BB replied to the topic Quincunx Demonstration? in the forum General 15 years, 7 months ago
Read pages 16 to 32 “Normality and the Process Behaviour Chart” for a fascinating analysis of the Quincunx. Surprisingly, the distribution of balls is not binomial !!!
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BB replied to the topic Six Sigma Capable in the forum General 15 years, 7 months ago
stan baby…
i’m sure u’v made it very clear (as an adult) for someone who is “NEW” at this!!!
man… u’r so matured…!!!
OK…I shall make it even more simple…just for u:
” If u’r estimated part to part variation, estimated @ 99.73% Confidence Level viz. nothing but u’r 6sigma lies within u’r customer or process specific tolerance…[Read more] -
BB replied to the topic Proposal-Introduction of 6Sigma in an organization in the forum General 15 years, 7 months ago
Man…. u rock!!
Naima… pc of advice: Pls do contact u’r faculty from where u got the BB certification. -
BB replied to the topic Six Sigma Capable in the forum General 15 years, 7 months ago
hi JB,
U r close enough!…” If u’r 6 sigma limits are below USL & above LSL then process is capable or defect free (in simple words)” but most importantly if u’r 6 sigma limits = 50% of u’r tolerance limits then u’r process is 6sigma capable.
…easy isn’t it!
bye
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BB replied to the topic Sigma level from process capability in the forum General 15 years, 8 months ago
Darth claims: ‘All is revealed in his online book entitled “Mysteries of Six Sigma”. ”
Where are you Darth ? Is Stan correct ? -
BB replied to the topic Sigma level from process capability in the forum General 15 years, 8 months ago
Darth,
Could you please share with us how this book answers these basic questions. - Load More