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Six Sigma Effectiveness Ochia Charles, Member
Please, can someone evaluate the effectiveness of Six Sigma process improvement methodology.




Variability reduction as a metric for effectivenessAleyda In my opinion, evaluating the effectiveness of the improvement of a process starts from the start of application of the Six Sigma method. One should use a metric to measure how much the variability of my process has decreased starting from the application of DMAIC. 



How to Evaluate Lean Six Sigma Effectiveness?Ebruke Eddy, Member I am in the process of undertaking my MSc dissertation on the ' Effectiveness of Lean Six Sigma in the Oil Sector Production Processes'. I would like to know if this feat is achievable, i.e. measuring the effectiveness of LSS on a process and how best to go about it. I was actually told it is not possible to measure this. Thank you for your assistance. 



How to Evaluate Lean Six Sigma EffectivenessWilliam Shump, Member Many people measure the effectiveness by quantifying the savings of any project where Lean Six Sigma was used. In my opinion that is an overinflation of the value. To truly measure the effectiveness of lean Six Sigma you must be able to quantify how much savings or other key metrics changed due to the application of the lean Six Sigma methodology beyond what would have happened if that methodology didn't exist. This is virtually impossible to quantify because if these are truly key projects then someone would have worked on them anyway. They might not have gotten near the savings or improvements out of the project that they did if they used lean Six Sigma, but they may have. Since you don't have a true baseline of what would have happened in the absence of lean Six Sigma it is impossible to truly quantify the additional savings that were created by following the methodology. 



How to Evaluate Lean Six Sigma EffectivenessCristian Bleotu, Member Hi All, if it is to prove that following an improvement Six Sigma projects, we have got the desired positive change, yes, it is possible to do it.
Hypothesis testing tools can be used to prove if significant change after applying the planned measures has happened. So you can get a statistical proof actually by this.
@William, statistics are covering it with hypothesis testing in this case. Cristian. 


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