In the Measure phase of a Six Sigma projects , data must be collected to illustrate the pain (Y), meaning that the current state (as-is) should be depicted over time and in terms of process capability. Depending on the Datentyp for Y, this can be represented as DPMO, ppm or Cp/CpK. The Data Collection Plan serves as a type of “work instruction” for the team, specifying how, in what quantity, when, and which data should be collected. This data is then compiled, analyzed, and presented. Collecting data to represent the large Y is a “must” in the Data Collection Plan, but also the influencing factors (x’s) from the Define phase can be collected and presented in the Measure phase to provide initial insights for the Analyze phase.