Which of the following could be responsible for variability that is special cause (nonrandom)?
A)Broken machinery.
B)Defective parts and materials.
C)Operator error.
D)All these answer choices are correct.

Question

Quizplus · Accepted Answer

All three choices could be responsible for special cause variability as they represent specific, identifiable sources of variation that are not inherent in the process itself. Broken machinery and defective parts and materials are examples of equipment or input variables that can lead to nonrandom variability. Operator error represents a human-driven source of variation that can also be targeted for improvement through training and process control.

Which of the Following Could Be Responsible for Variability That