Gage R&R (Gage Repeatability and Reproducibility) is the amount of measurement variation introduced by a measurement system, which consists of the measuring instrument itself and the individuals using the instrument. A Gage R&R study is a critical step in manufacturing Six Sigma projects, and it quantifies three things1:

Interpret the key results for Nested Gage R&R Study Step 1: Use the ANOVA table to identify significant factors and interactions Use the ANOVA table to identify which... Step 2: Assess the variation for each source of measurement error Use the variance components (VarComp) and... Step 3: Examine the ...

In ANOVA terminology, most Gage R&R studies have an ANOVA type data structure. A variance component analysis can easily be done in most software packages. The individual variance components provide estimates of error, operator and "true" product variance .

Gage R&R, which stands for gage repeatability and reproducibility, is a statistical tool that measures the amount of variation in the measurement system arising from the measurement device and the people taking the measurement. See Gage R&R tools.