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Lean Six Sigma Q&A - GoLeanSixSigma.com

With Process Sigma, is it true to say that Process Sigma increases when the Standard Deviation of the process deceases?

Process Standard Deviation is directly related to process variation and high process variation is not good. A good way to view Process Sigma (or process performance) is to estimate how many process Standard Deviations would fit within the process requirements (or specifications). A higher number represents a better performing process.
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Lean Six Sigma Q&A - GoLeanSixSigma.com

What should I do if I’m being asked to report on the success of a Process Improvement Project, but do not feel comfortable with the data?

We recently got one of our items on our list automated, but now we have no support for the process. I am now being asked to report on the success but do not feel comfortable with the data, while management won’t let me stress the concern. What should I do? That is a tough place…
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Lean Six Sigma Q&A - GoLeanSixSigma.com

How do you handle an employee who is constantly looking for cracks in the process to revert back to the old way of doing things?

This is a great question. But before we can develop a strategy, we have to understand the root causes behind the behavior. Here are some questions I would have about the employee and the process changes: Did we call his/her baby ugly? In other words, how invested were they in the old process? Did they…
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Lean Six Sigma Q&A - GoLeanSixSigma.com

How do you overcome a scenario where the people who use the process want the improvement but their management is resistant to change?

We have seen this happen before, and ultimately, we have discussions with management about why they are resistant to change. There could be many reasons: Too risky or too much risk of failure The cost is too much The change isn’t solving the right problem The consequences are too negative for a customer, stakeholder or…
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Lean Six Sigma Q&A - GoLeanSixSigma.com

How do you prevent the why from going global (instead of getting to the root cause, trying to ask it to every other thing)?

First, you need to brainstorm all the potential root causes, fill your fishbone! Go ahead and let it be unfiltered. Then, start the filtering process. A good questiont to ask is: “Of these causes, what do we have control over?” (circle them, or highlight them), Then from those, start to prioritize the root causes that…
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