19.3. MEASURE
This structure identifies the CTQs our project will address. The deliverables from the Measure phase of a DFSS project are:
Validated metrics for the new process or product
A measurement plan
After the define phase CTQs have been identified, but they are expressed in the voice of the customer. In the measure phase CTQs are operationally defined. This means that the team establishes specific metrics for each CTQ, in effect converting it to an internal requirement. Data sources should be identified or created. When using existing data, be sure to consider data quality issues and data range issues. That is, are these data suitable for our purposes? Are they accurate, reliable, etc.? Do they cover a representative period of time? Etc. ...
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