Manage Control Limits When Implementing Statistical Process Control

Statistical process control (SPC) is the application of statistical methods to identify and control the special cause of variation in a process. Control charts, in theory, are used in product and process development to analyze processes. When a process is shown to be in control in both an average and range chart the process can […]

Determine The Root Cause: 5 Whys

5 Whys is used during the Analyze phase of DMAIC to lead the team to the root cause of the problem. It is an iterative questioning technique which is often used in cases where human interactions are involved and is generally completed without the need of any statistical analysis. 5 Whys analysis starts with a […]