Pre-control should only be used when process capability is greater than 88 percent of the tolerance.

Question

Quizplus · Accepted Answer

Pre-control charts are used for very small tolerance levels, typically less than six times the process variation. They are more suitable for early stages of process development when a full process capability analysis has not yet been conducted. Therefore, the statement is false as pre-control can be used even when process capability is less than 88% of the tolerance.

Pre-Control Should Only Be Used When Process Capability Is Greater