Multiple choice six-sigma green-belt

When a common cause is interpreted as a special cause we would be _____

  1. Under reacting

  2. Over reacting

  3. Process Change

  4. Quick fix
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When a common cause (inherent, random variation) is incorrectly interpreted as a special cause (assignable, unusual variation), we overreact by making unnecessary adjustments to a stable process. This increases variation and degrades performance - known as tampering.

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