Multiple choice six-sigma green-belt

Which of the following is incorrect

  1. Measurement error is always present in the total variation

  2. Measurement variation can be separated from the true process variation

  3. Measurement error is always a bigger deal than you think

  4. Measurement variation should be minimum
Reveal answer Fill a bubble to check yourself
C Correct answer
AI explanation

A Gauge R&R (measurement systems analysis) study exists precisely to separate measurement variation (repeatability/reproducibility) from the true underlying process/part variation, so that statement is correct, not the incorrect one. The statement that doesn't hold up as a general quality-engineering principle is 'measurement error is always a bigger deal than you think' — it's a vague, unfalsifiable claim rather than an accepted MSA fact, making it the actual incorrect statement among the choices. The other two statements (error is always present in total variation; measurement variation should be minimized) are standard, accepted principles.

Keep practicing — related questions