Deming describe two types of performance variation: common cause variation and special cause variation. The common cause variation is a variation resulting random causes and rarely has any impact $$ the differences are to be expected. The special cause variation is described as

Group of answer choices

Resulting from too many staff being involved

Resulting from factors that are not inherent in the process and when they affect the process, it is often significant.

Resulting when outsiders interfere with the process.

Resulting from special changes in the way information was collected