Question 20

As long as the process is not centered, the process capability ratio is an appropriate measure of the capability of the process.

True

False

Question 21

Control charts with 2-sigma control limits imply that there is a 5% chance that a point might fall outside the control limits even if the process is in control.

True

False

Question 22

The purpose of a control chart is to distinguish between natural variation and assignable variation

True

False