A Black Belt practitioner constructs a control chart to display a process mean and its outer limits. In the chart above, what does LCL stand for?

Question

Quizplus · Accepted Answer

LCL stands for Lower Control Limit
Key Takeaway: Lower Control Limits (LCL) are calculated as three standard deviations below the mean of a process. For example, if a single production cycle takes an average of 53 minutes, an LCL can be calculated using this mean and standard deviation. An LCL is useful in setting limits to product quality so that they continue to fulfill client requirements despite variations around the mean of the process.

A Black Belt Practitioner Constructs a Control Chart to Display