Which of these patterns on a control chart would require a worker to stop the process and investigate for an assignable cause?
A)a run of three consecutive points above the center line
B)a trend run of six consecutive points all decreasing
C)six consecutive points close to the center line
D)one point near the lower control limit

Question

Quizplus · Accepted Answer

A trend of six consecutive points all decreasing indicates a non-random pattern that suggests a systematic change in the process, warranting investigation for an assignable cause.

Which of These Patterns on a Control Chart Would Require