Hypothesis Testing in DMAIC Projects


 
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Hypothesis Testing in DMAIC Projects
Zafar Kamal, Consultant, Canada, Member
Is hypothesis testing a must in DMAIC projects? Why (not)?...Register
 

 
Hypothesis Testing in DMAIC?
Jens Folke, Consultant, Denmark, Member
Sometimes a DMAIC project can be based on Six Sigma process mapping only, i.e. SIPOC/IPO/C&E/FMEA, and the process check is a revisit to the RPN of th...
 

 
Hypothesis Testing in DMAIC
Zafar Kamal, Consultant, Canada, Member
Dear Folke, thanks for your comment, I agree 100%. What happens if we eliminate hypothesis evaluation for any data?...
 

 
Yes - Hypothesis Testing is Needed
James, Business Consultant, United States, Member
If the solution is known, just implement it.
Otherwise DMAIC is a method to determine solutions when unknown. DMAIC uses various tools/techniques...
 

 
DMAIC is a Scientific Method
Manuel Razo, In-house consultant, Philippines, Member
DMAIC and scientific method are one and the same. So hypothesis testing is a must....
 

 
DMAIC is not only a Scientific Method
James, Business Consultant, United States, Member
DMAIC uses scientific methods, but involves more such as risk and change management....
 

 
Decision Making on an Incomplete Data Base
Jens Folke, Consultant, Denmark, Member
You have reduced the error rate from 5 in 180 til 3 in 200. A 2-proportion test is not significant, because you need about 3500 samples. This may take...
 

 
Depends on Cost and Benefits of Implementation
Jagdish B Acharya, Consultant, India, SIG Leader
Normal test of significance in hypothesis testing has 5% and 1% constants. In terms of deviation this amounts to two sigma and 2.5 sigma levels.
...
 

 
Hypothesis Testing in DMAIC is not Always Necessary
Georges Van Cauwenbergh, Management Consultant, Ireland, Member
KISS... And by keeping it simple and having data for the total population (which by the way is not that unusual) we do not need statistics....
 

 
Data Always Leads to Statistics
James, Business Consultant, United States, Member
@Georges Van Cauwenbergh: Except when only provided one data point, we always use statistics to describe or underst...
 

 
Samples and Populations and Hypothesis Tests
Ger de Waard, Management Consultant, Netherlands, SIG Leader
Why do we even need hypothesis tests? After all, we took a random sample and our sample mean of 325.8 is different from 250. That is different, right?...
 

 
 


Special Interest Group Leader
Jagdish B Acharya
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