In a variables control chart, which of the following has likely occurred if two points in succession are farther than two standard deviations from the mean?
A) erratic behavior
B) nonrandom event
C) process drift
D) natural variation
E) process run

Question

Quizplus · Accepted Answer

Two points in succession that are farther than two standard deviations from the mean suggest a nonrandom event, indicating that the process may be influenced by special causes rather than just natural variation.

In a Variables Control Chart, Which of the Following Has