What does a low percent gage R&R indicate in a gauge R&R study?

What does a low percent gage R&R indicate in a gauge R&R study?

• A. The measurement system has high variability.
• B. The measurement system is unreliable for decisions.
• C. The measurement system has low variability and is reliable.
• D. The measurement system is biased.

Answer: (C)

Low percent gage R&R means the measurement system adds little variability to the observed data. In a gauge R&R study, we examine how much of the total variation comes from the measurement process itself. When that portion is small, the measurement system is precise and stable, so decisions based on those measurements are unlikely to be distorted by measurement error. In other words, the measurement system has low variability and is reliable for decisions. If the percent gage R&R were high, the system would introduce substantial noise and could undermine decision accuracy. A low percent does not by itself prove there is no bias, but it does indicate the measure is dependable in terms of precision for making conclusions.

Low percent gage R&R means the measurement system adds little variability to the observed data. In a gauge R&R study, we examine how much of the total variation comes from the measurement process itself. When that portion is small, the measurement system is precise and stable, so decisions based on those measurements are unlikely to be distorted by measurement error. In other words, the measurement system has low variability and is reliable for decisions. If the percent gage R&R were high, the system would introduce substantial noise and could undermine decision accuracy. A low percent does not by itself prove there is no bias, but it does indicate the measure is dependable in terms of precision for making conclusions.