Variation in process output can occur as a result of chance or as a result of assignable causes.

Question

Quizplus · Accepted Answer

Variation in process output can be classified as either common cause variation or special cause variation. Common cause variation, also known as chance cause variation, refers to the natural variability that is inherent in a process. It is caused by factors that are inherent in the process itself and is expected to occur over time. Special cause variation, also known as assignable cause variation, refers to variation that is caused by factors that are not inherent to the process. These causes can be identified and addressed in order to improve the process.

Variation in Process Output Can Occur as a Result of Chance