# What is the purpose?

Six Sigma – iSixSigma Forums Old Forums General What is the purpose?

Viewing 13 posts - 1 through 13 (of 13 total)
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• #45949

Cityidiot
Participant

Why to teach  all types  of  statistic in  the SS-BB Courses?if  We  usually use  only 5-10% of  the real taught tools and  statistical equations in  the  real  life experience?

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#151087

accrington
Participant

Who is we?
What are real taught tools and statistical equations? Which 5 – 10% do “we”use?
What is real life experience?

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#151092

Dan Chauncey
Participant

I don’t accept your statement. I created a quick list (probably missed some) of the tools taught to SS/BBs and found that I have used way more than 10%.
Chi Sq            Used
ANOVA          Used
T-test              Used
Paired t-test   Not Used
Z-test              Not Used
DOE               Not Used
ANOM            Used
Gage R&R     Used
Sample Size Calculations    Used
Simple regression    Used
Multiple regression   Not Used
Logistic regression   Used

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#151093

Ancient Statistics
Participant

Reason 1: The way statistics is taught in Six Sigma is way outdated. The “tools” are being taught as separate tools rather than showing the students how all of the “classical tools” can be translated and reduced to the simple correlation coefficient (t-test, ANOVA, Regression, Chi-Square). In addition, the tools that organizations really need, i.e. the exploratory, data mining tools are not being taught. There is still the bias that data exploration is a “fishing expedition” and that the only good statistical analysis is based on experimental design. So you end up with frustrated GBs and BBs who have to forcefit their “toolkit” to the problem rather than use the tools to identify the problem. What is “root cause analysis” other than identifying/naming the problem and understanding the mechanisms that create the problem. Common sense has been lost in the narrow-minded fixation on “inferential statistics”.
Reason 2: The way Six Sigma is being deployed. If your goal is to “certify” x GBs and BBs you have a certification process including a “body of knowledge” blessed by the ASQ you get a training program that was developed about 18 years ago and hasn’t changed or adapted since then.
Six Sigma has ossified into a template that is forcefit into each organization. Unless you have someone experienced enough to adapt this methodology to the specific needs of the organization, it can be quite a frustratring experience.

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#151094

clb1
Participant

They don’t teach all that much.
If we assume you are using the royal “We” to refer to yourself then just because you only choose to use 5-10% of what you were taught doesn’t mean that everyone else shares your dilemma.
If you are using the “We” to refer to the global set of users of statistics then I would have to quote the author whose name escapes me at the moment and say  ” It is well known that 47% of all statistics are made up on the spur of the moment.”

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#151105

Idiotinmath.
Participant

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#151109

Mikel
Member

You don’t have a clue about what you are writing about here.

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#151170

Lombard
Participant

To increase the income for six sigma consultant is the reason for it.  Many more peoples should ask this same question and would give great benefit.
Ishikawa’s law should be used – 7 tools of quality only are important.

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#151187

accrington
Participant

Thanks Pierre. How can I use Ishikawa’s tools instead of some of the methods that I currently use in Product/ Process development, Sensory Testing and Consumer research, some examples of which I’ve listed below. Please tell me how I can get away without using these pesky statistical tools.
Experimental design/ RSM/ Mixture Designs – which of the seven tools should I use here?
Sensory Testing – Mixed Model Designs/ Multivariate Methods – which of the seven tools can I use here?
Repeated Measures Designs/ Split Plot Designs/ Conjoint Analysis – which of the seven tools can I use instead of these?
Gauge R & R/ Interlaboratory studies – which of the seven tools can I use here?

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#151191

Idiotinmath.
Participant

Stan,Stan & STAN? (not Satan?)

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#151195

accrington
Participant

It’s Santa.
Why don’t you copy one of the questions out of your Statistics for Dummies book and see if he can answer it?

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#151198

Idiotin math.
Participant

Instead  of  dancing  about  the  questions  ,have  some  courage  and  answer  the  simple  question  which  was  posted  to  you?Otherwise ??

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#151201

accrington
Participant

Otherwise what?
Give me the e – mail address of your tutor and I’ll send it to him/ her directly

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