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Use your charts and graphs to showcase “Before and After” data. The one that does the best job either a Run Chart or a Control Chart. Use the same Y axis scale and put the graphs side by side to show a shift in the median. Box Blots are good comparisons too, but they don’t tell the story of what happened “over time.”

Elisabeth Swan

Elisabeth is a Managing Partner & Executive Advisor at GoLeanSixSigma.com. 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.