The Full Form of GRR is Gauge Repeatability and Reproducibility.
ANOVA gauge repeatability and reproducibility is a measurement systems analysis technique that uses an analysis of variance (ANOVA) random effects model to assess a measurement system. The evaluation of a measurement system is not limited to gauges (or gages) but to all types of measuring instruments, test methods, and other measurement systems.
GRR
means
Gauge Repeatability and Reproducibility
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