Six Sigma Black Belt Domain 8: Control

In a Six Sigma project focusing on reducing defects in a manufacturing process, which of the following control charts is MOST appropriate for monitoring the proportion of defective items when the sample size varies?

During the Control phase of a Six Sigma project aimed at improving the cycle time of an assembly line, which type of control chart is BEST suited for monitoring the average time taken per assembly when the process is continuous and data is collected in subgroups?

In implementing a control plan for a Six Sigma project, which tool is MOST effective in ensuring that process improvements are maintained over time?

Which of the following statistical tools is MOST appropriate for a Six Sigma Black Belt to use when determining if a process is stable and predictable over time?

When assessing the capability of a new process design to meet customer requirements, which Six Sigma tool should be utilized to predict future performance and verify that the process can achieve the desired specification limits?

In the Control phase, which tool is MOST effective for identifying the root cause of a variation that occurs in a high-volume manufacturing process?

For a process that is subject to short runs and rapid changes, which control chart is BEST suited for monitoring its performance?

When implementing process controls in a service industry project, which approach is MOST effective in ensuring that the service meets predefined quality standards consistently?

Which technique is MOST beneficial for a Six Sigma Black Belt to use in order to ensure that a new process design will not revert to its old state after implementation?

In a Six Sigma project, which type of control chart should be used to monitor the variability of a process when subgroups of varying sizes are being analyzed?

For a Six Sigma project aimed at reducing cycle time in a service process, which control chart is MOST appropriate for monitoring the time between consecutive events in a process?

In a process improvement project within a call center, which method is BEST for ensuring that the changes made to reduce average call handling time are sustained over the long term?

When analyzing a production process that has been identified with a high rate of defects, which Six Sigma tool would be MOST effective in prioritizing the types of defects to focus improvement efforts on?

In the Control phase of a Six Sigma project, which approach is MOST effective for correcting a process that is not performing as expected?

For processes that are highly complex and have interdependent steps, which tool is MOST useful in ensuring control and visibility across the process?

In determining the effectiveness of a process control implemented in a manufacturing line, which Six Sigma tool provides the BEST quantitative measure of process stability?

In a Six Sigma project aimed at improving the quality of a product, which technique is MOST critical in the Control phase for ensuring that the product meets customer specifications without over-processing?

Which method is BEST for a Six Sigma team to use when seeking to eliminate variation in a process output that is critical to quality (CTQ)?

In the Control phase, how should a Six Sigma Black Belt practitioner address the risk of process performance degradation over time?

When a Six Sigma project results in changes to a process, which tool is MOST effective for documenting the new standard work instructions?