Multiple choice six-sigma green-belt

Data consistency is ensured with all of the following except …

  1. Stable measurement system

  2. Consistent measurement procedures

  3. Same inspectors for data collection

  4. Reasonable data
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Data consistency comes from stable measurement systems and consistent procedures, not from using the same inspectors repeatedly. Different trained inspectors following the same documented procedures can produce equally consistent data. Relying on the same inspectors is not necessary and could even introduce bias if that person has consistent measurement habits. Therefore, 'Same inspectors for data collection' is the correct exception.

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