Question

Statistical process control charts: Group of answer choices

A) display upper and lower limits for process variables or attributes and signal when a process is no longer in control.
B) are a graphic way of classifying problems by their level of importance, often referred to as the 80-20 rule.
C) display the measurements on every item being produced. indicate to the operator the true quality of material leaving the process.
D) indicate to the process operator the average outgoing quality of each lot.

Answer 1

A) Display upper and lower limits for process variables or attributes and signal when a process is no longer in control.

Step-by-step explanation:

They are graphs that are used to study how a process changes over time and the data in it is plotted in order of time.