CHAPTER 5Key #4: Base Decisions on Data and Facts

There are a lot of good reasons why data and facts form the true foundation of Lean Six Sigma. Want to know who your customers are and what they want? You need to collect data. Want to improve processes? You'll need to collect data on variation, defects, and process flow. Want to avoid the kind of needless arguments and squabbling that destroy teamwork? Have a rule that people must support their opinions with facts.


You also need data and facts because they'll save you a lot of trouble and prevent a lot of wasted dollars and time...

When the utilities in one state were de-regulated, one company ...

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