Which of the following is NOT a key element of the Six Sigma process?

Cost minimization is not identified as a key element of the Six Sigma process. Six Sigma primarily focuses on improving quality by identifying and reducing defects in processes. This is accomplished through a structured methodology that includes defining problems, collecting and analyzing data, and implementing solutions to drive improvement.

The emphasis of Six Sigma is on understanding variability, improving processes, and achieving measurable quality enhancements. While cost management can be an outcome of process improvements—since reducing defects often leads to cost savings—cost minimization itself is not a main focus of the Six Sigma framework. The approach prioritizes overall process effectiveness and efficiency rather than just reducing costs.

In contrast, the other elements mentioned are intrinsic to the Six Sigma methodology. Problem identification is crucial as it sets the stage for what needs to be improved. Data collection is essential for providing the insights needed to understand the nature of the problem and measure the effects of any changes made. Solution implementation is the final step where the improvements identified are put into practice, completing the Six Sigma cycle.