Multiple choice six-sigma green-belt Mistake proofing is _______ A method of identifying potential defects A technique for eliminating errors by making it impossible to make mistakes in the process A means of responding to defects before they leave the facility Part of Statistical Process Control Reveal answer Fill a bubble to check yourself B Correct answer Explanation Mistake proofing (Poka-Yoke) designs processes so that errors cannot occur or are immediately detectable. Unlike inspection which finds defects after they occur, mistake proofing prevents them at the source. This is a core Lean quality technique.