%GRR

gauge repeatability and reproducibility

%GRR = 100 · σ_GRR / σ_total

The share of the observed variation that comes from the measurement system (repeatability plus reproducibility). AIAG: below 10 % acceptable, 10 to 30 % may be acceptable, above 30 % not acceptable. It can also be expressed as a percentage of the tolerance.

Calculate it

Gage R&R (MSA): Crossed study with ANOVA: repeatability, reproducibility, %GRR, % tolerance and ndc.

Related terms

• ndc: number of distinct categories
• Repeatability and reproducibility: EV and AV in Gage R&R