What is the goal of using a control chart in Six Sigma?

The goal of using a control chart in Six Sigma is to monitor variations in a process. Control charts are essential tools within the Six Sigma methodology, used to distinguish between common cause variations, which are inherent in a process, and special cause variations, which can indicate a problem or an opportunity for improvement. By plotting data points over time, control charts help teams visualize data trends, maintain process stability, and make informed decisions based on statistical analysis. This allows for continuous improvement by identifying when a process is out of control and requires intervention. By keeping track of variations, teams can ensure processes remain within specified limits and achieve desired outcomes effectively.