The purpose of control charts is to:
A) estimate the proportion of output that is acceptable.
B) inspect the quality of all outputs from a process.
C) determine if the output of a process is within specifications.
D) distinguish between random variation and assignable variation in a process.
E) all of these choices are correct.

Question

Quizplus · Accepted Answer

The purpose of control charts is to distinguish between random variation and assignable variation in a process. Control charts are used to monitor the stability of a process and detect any unusual patterns or trends that might signal a potential problem. By distinguishing between common cause (random) variation and special cause (assignable) variation, control charts allow organizations to make data-driven decisions about how to improve their processes and reduce variability. Options A, B, and C do not accurately describe the primary purpose of control charts.

The Purpose of Control Charts Is To