Wednesday at the Quality Expo Conference, I am to be presenting on the topic, “Minimizing Risks through a Predictive Measurement system.” Measurements provide a means for understanding product and/or process risks; however, many traditional performance reporting methodologies can deceive. Traditional performance reporting assessments such as Acceptable Quality Level (AQL), process capability indices (Cp, Cpk, Pp, [...]
Posts Tagged ‘process capability’
30,000-foot-level predictive dashboard system
QUESTION: What is the difference between a 30,000 foot level individuals control chart and a standard individuals control chart? How are the limits computed between these two types of charts? RESPONSE: The control charting and process capability reporting at a 30,000-foot-level is not traditional control charting.
Process performance reporting with special cause conditions
During an assessment of a process’ Ph, the control chart in Figure 1 was created. There were three out of control signals and another point that was almost out of control, but no reason for the high special-cause values could be determined.
Lean Six Sigma process capability sigma quality: Issues and resolution
QUESTION: Thoughts about calculating an overall sigma level for an organization using a scorecard approach?
Process capability and machine capability: How to report process capability indices in a format that everyone understands
QUESTION: What is the difference between process capability and machine capability? When do we carry out one or the other? How can we use the results of both? RESPONSE: To begin with there can be much confusion relative to the word process capability. In Minitab statistical software process capability indices (Cp and Cpk) calculation considers [...]
