If no variation occurred between manufactured items, the resulting points on a control chart would form a horizontal line.

Question

Quizplus · Accepted Answer

A horizontal line on a control chart indicates that there is no variation in the process, meaning that all manufactured items are identical. This is the ideal scenario in quality control. Any variation in the process would result in points on the control chart that deviate from the horizontal line.

If No Variation Occurred Between Manufactured Items, the Resulting Points