A process control chart:
A)Assumes that 99.74% of special cause variation will fall between upper and lower limits
B)Has upper and lower control limits set at $\pm$ 2 standard deviations from the center line
C)Separates the assignable cause of variation from the common cause of variation
D)Assigns causes of variation to operator,machine,or material

Question

Quizplus · Accepted Answer

A process control chart is used to distinguish between common cause variation (inherent to the process) and special cause variation (due to specific, identifiable factors).

A Process Control Chart: A)Assumes That 99 ±\pm± 2 Standard Deviations from the Center Line C)Separates the Assignable

A Process Control Chart:
A)Assumes That 99 $\pm$ 2 Standard Deviations from the Center Line
C)Separates the Assignable