How do you deal with someone who rolls their eyes during your meetings?

I would ask them for their input. Get them to participate to understand what that gesture really means. Once they have been heard then the topic is open for group discussion. Groups will often help you with negative participants.
To access this post, you must purchase Go-Getter Membership.
Elisabeth Swan - GoLeanSixSigma.com

Elisabeth Swan

Elisabeth is a Managing Partner at GoLeanSixSigma.com, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. For over 25 years, she's helped leading organizations like Amazon, Charles Schwab and Starwood Hotels & Resorts build problem-solving muscles with Lean Six Sigma to achieve their goals.
Related Posts
Lean Six Sigma Q&A - GoLeanSixSigma.com

How do you get data after the process analysis?

If you need more data in the Analyze Phase you would use the same techniques that you used in the Measure Phase. To get more depth on data collection you can access the free Yellow Belt Training (https://goleansixsigma.com/free-lean-six-sigma-training/) or watch…
To access this post, you must purchase Go-Getter Membership.